diff --git a/II/Referatas/Makefile b/II/Referatas/Makefile
index 61c82d3..472da19 100644
--- a/II/Referatas/Makefile
+++ b/II/Referatas/Makefile
@@ -1,19 +1,18 @@
-CROSSING=622916 6109267 626066 6111487 # xmin ymin xmax ymax
+CROSSING = 622916 6109267 626066 6111487 # xmin ymin xmax ymax
 ZEIMENA_TOLERANCES = 128 256 512 1024 2048 4096
 SINEWAVE_TOLERANCES = 2 16 32
 CROSSING_TOLERANCES = 64 128 256
 SINEWAVE_SIZE = 120x48
-#CROSSING=622916 6119267 626066 6121487
 GEN1 = $(addsuffix .pdf, \
-		  $(addprefix sinewave2-douglas-,$(SINEWAVE_TOLERANCES)) \
-		  $(addprefix sinewave2-visvalingam-,$(SINEWAVE_TOLERANCES)) \
-		  $(addprefix zeimena-douglas-,$(ZEIMENA_TOLERANCES)) \
-		  $(addprefix zeimena-visvalingam-,$(ZEIMENA_TOLERANCES)))
+		  $(addprefix sinewave2_douglas_,$(SINEWAVE_TOLERANCES)) \
+		  $(addprefix sinewave2_visvalingam_,$(SINEWAVE_TOLERANCES)) \
+		  $(addprefix zeimena_douglas_,$(ZEIMENA_TOLERANCES)) \
+		  $(addprefix zeimena_visvalingam_,$(ZEIMENA_TOLERANCES)))
 GEN2 = $(addsuffix .pdf, \
-		   $(addprefix overlaid-zeimena-douglas-,$(CROSSING_TOLERANCES)) \
-		   $(addprefix overlaid-zeimena-visvalingam-,$(CROSSING_TOLERANCES)) \
-		   $(addprefix overlaid-sinewave2-douglas-,$(SINEWAVE_TOLERANCES)) \
-		   $(addprefix overlaid-sinewave2-visvalingam-,$(SINEWAVE_TOLERANCES)))
+		   $(addprefix overlaid_zeimena_douglas_,$(CROSSING_TOLERANCES)) \
+		   $(addprefix overlaid_zeimena_visvalingam_,$(CROSSING_TOLERANCES)) \
+		   $(addprefix overlaid_sinewave2_douglas_,$(SINEWAVE_TOLERANCES)) \
+		   $(addprefix overlaid_sinewave2_visvalingam_,$(SINEWAVE_TOLERANCES)))
 
 .PHONY: all
 all: mj-referatas.pdf mj-prezentacija.pdf
@@ -27,19 +26,27 @@ mj-prezentacija.pdf: mj-prezentacija.tex ../../misc/Logo_vilniaus_universitetas.
 	latexmk -pdf $<
 
 define algo2img
-db/.faux_$(1)-$(2)-%: $(2).sql db/.faux_ready
+db/.faux_$(1)_$(2)_%: $(2).sql db/.faux_ready
 	./managedb -- --echo-all \
 		-v ON_ERROR_STOP=1 \
 		-v src=$(1) \
-		-v tolerance=$$* \
+		-v param1=$$* \
 		-v tbl=$(1)_$(2)_$$* \
 		-f $(2).sql
 	touch $$@
-$(1)-$(2)-%.pdf: layer2img.py db/.faux_$(1)-$(2)-%
+db/.chaikin_$(1)_%: chaikin.sql db/.faux_ready
+	./managedb -- --echo-all \
+		-v ON_ERROR_STOP=1 \
+		-v src=$(1) \
+		-v param1=$$* \
+		-v tbl=chaikin_$(1)_$$* \
+		-f chaikin.sql
+	touch $$@
+$(1)_$(2)_%.pdf: layer2img.py db/.faux_$(1)_$(2)_%
 	./layer2img.py --group2-table=$(1)_$(2)_$$* --size=$(3) --outfile $$@
 endef
 define algo2overlay
-overlaid-$(1)-$(2)-%.pdf: layer2img.py db/.faux_$(1)-$(2)-%
+overlaid_$(1)_$(2)_%.pdf: layer2img.py db/.faux_$(1)_$(2)_%
 	./layer2img.py $(3) --group1-table=$(1) --group2-table=$(1)_$(2)_$$* \
 		--outfile $$@
 endef
diff --git a/II/Referatas/douglas.sql b/II/Referatas/douglas.sql
index 6d4a8bb..831efd3 100644
--- a/II/Referatas/douglas.sql
+++ b/II/Referatas/douglas.sql
@@ -8,7 +8,7 @@ CREATE TABLE :tbl (
 INSERT INTO :tbl (geom) (
     SELECT
         ST_Multi (ST_Simplify (ST_LineMerge (ST_Union (geom)),
-                :tolerance)) AS geoms
+                :param1)) AS geoms
     FROM
         :src);
 
diff --git a/II/Referatas/mj-prezentacija.tex b/II/Referatas/mj-prezentacija.tex
index f3b64e3..2b1ac78 100644
--- a/II/Referatas/mj-prezentacija.tex
+++ b/II/Referatas/mj-prezentacija.tex
@@ -118,14 +118,14 @@
         Visvalingam-Whyatt                                                   \tabularnewline \hline
 
         \onslide<3->{\center
-            \includegraphics[width=.75\linewidth]{overlaid-zeimena-douglas-64}}      &
+            \includegraphics[width=.75\linewidth]{overlaid_zeimena_douglas_64}}      &
         \onslide<3->{\center
-            \includegraphics[width=.75\linewidth]{overlaid-zeimena-visvalingam-64}}  \tabularnewline \hline
+            \includegraphics[width=.75\linewidth]{overlaid_zeimena_visvalingam_64}}  \tabularnewline \hline
 
         \onslide<4->{\center
-            \includegraphics[width=.75\linewidth]{overlaid-zeimena-douglas-256}}     &
+            \includegraphics[width=.75\linewidth]{overlaid_zeimena_douglas_256}}     &
         \onslide<4->{\center
-            \includegraphics[width=.75\linewidth]{overlaid-zeimena-visvalingam-256}} \tabularnewline \hline
+            \includegraphics[width=.75\linewidth]{overlaid_zeimena_visvalingam_256}} \tabularnewline \hline
     \end{tabularx}
 \end{frame}
 
diff --git a/II/Referatas/mj-referatas.tex b/II/Referatas/mj-referatas.tex
index b6a096f..012ca8a 100644
--- a/II/Referatas/mj-referatas.tex
+++ b/II/Referatas/mj-referatas.tex
@@ -209,28 +209,28 @@ bends on the original map should be retained.
         Visvalingam-Whyatt                                                \tabularnewline \hline
 
         128/16384                                                         &
-        \includegraphics[width=\linewidth]{zeimena-douglas-128}           &
-        \includegraphics[width=\linewidth]{zeimena-visvalingam-128}       \tabularnewline \hline
+        \includegraphics[width=\linewidth]{zeimena_douglas_128}           &
+        \includegraphics[width=\linewidth]{zeimena_visvalingam_128}       \tabularnewline \hline
 
         256/65536                                                         &
-        \includegraphics[width=.5\linewidth]{zeimena-douglas-256}         &
-        \includegraphics[width=.5\linewidth]{zeimena-visvalingam-256}     \tabularnewline \hline
+        \includegraphics[width=.5\linewidth]{zeimena_douglas_256}         &
+        \includegraphics[width=.5\linewidth]{zeimena_visvalingam_256}     \tabularnewline \hline
 
         512/262144                                                        &
-        \includegraphics[width=.25\linewidth]{zeimena-douglas-512}        &
-        \includegraphics[width=.25\linewidth]{zeimena-visvalingam-512}    \tabularnewline \hline
+        \includegraphics[width=.25\linewidth]{zeimena_douglas_512}        &
+        \includegraphics[width=.25\linewidth]{zeimena_visvalingam_512}    \tabularnewline \hline
 
         1024/1048576                                                      &
-        \includegraphics[width=.125\linewidth]{zeimena-douglas-1024}      &
-        \includegraphics[width=.125\linewidth]{zeimena-visvalingam-1024}  \tabularnewline \hline
+        \includegraphics[width=.125\linewidth]{zeimena_douglas_1024}      &
+        \includegraphics[width=.125\linewidth]{zeimena_visvalingam_1024}  \tabularnewline \hline
 
         2048/4194304                                                      &
-        \includegraphics[width=.0625\linewidth]{zeimena-douglas-2048}     &
-        \includegraphics[width=.0625\linewidth]{zeimena-visvalingam-2048} \tabularnewline \hline
+        \includegraphics[width=.0625\linewidth]{zeimena_douglas_2048}     &
+        \includegraphics[width=.0625\linewidth]{zeimena_visvalingam_2048} \tabularnewline \hline
 
         4096/16777216                                                     &
-        \includegraphics[width=.0625\linewidth]{zeimena-douglas-4096}     &
-        \includegraphics[width=.0625\linewidth]{zeimena-visvalingam-4096} \tabularnewline \hline
+        \includegraphics[width=.0625\linewidth]{zeimena_douglas_4096}     &
+        \includegraphics[width=.0625\linewidth]{zeimena_visvalingam_4096} \tabularnewline \hline
     \end{tabularx}
     \caption{{\DP} and {\VW} on Žeimena}
     \label{tab:comparison-zeimena}
@@ -264,16 +264,16 @@ page~\pageref{tab:comparison-crossing}.
         Visvalingam-Whyatt                                                   \tabularnewline \hline
 
         64/4096                                                              &
-        \includegraphics[width=\linewidth]{overlaid-zeimena-douglas-64}      &
-        \includegraphics[width=\linewidth]{overlaid-zeimena-visvalingam-64}  \tabularnewline \hline
+        \includegraphics[width=\linewidth]{overlaid_zeimena_douglas_64}      &
+        \includegraphics[width=\linewidth]{overlaid_zeimena_visvalingam_64}  \tabularnewline \hline
 
         128/16384                                                            &
-        \includegraphics[width=\linewidth]{overlaid-zeimena-douglas-128}     &
-        \includegraphics[width=\linewidth]{overlaid-zeimena-visvalingam-128} \tabularnewline \hline
+        \includegraphics[width=\linewidth]{overlaid_zeimena_douglas_128}     &
+        \includegraphics[width=\linewidth]{overlaid_zeimena_visvalingam_128} \tabularnewline \hline
 
         256/65536                                                            &
-        \includegraphics[width=\linewidth]{overlaid-zeimena-douglas-256}     &
-        \includegraphics[width=\linewidth]{overlaid-zeimena-visvalingam-256} \tabularnewline \hline
+        \includegraphics[width=\linewidth]{overlaid_zeimena_douglas_256}     &
+        \includegraphics[width=\linewidth]{overlaid_zeimena_visvalingam_256} \tabularnewline \hline
 
     \end{tabularx}
     \caption{{\DP} and {\VW} on river crossing area}
@@ -313,16 +313,16 @@ page~\pageref{tab:comparison-sinewave2}.
         Visvalingam-Whyatt                                                    \tabularnewline \hline
 
         2/4                                                                   &
-        \includegraphics[width=\linewidth]{overlaid-sinewave2-douglas-2}      &
-        \includegraphics[width=\linewidth]{overlaid-sinewave2-visvalingam-2}  \tabularnewline \hline
+        \includegraphics[width=\linewidth]{overlaid_sinewave2_douglas_2}      &
+        \includegraphics[width=\linewidth]{overlaid_sinewave2_visvalingam_2}  \tabularnewline \hline
 
         16/256                                                                &
-        \includegraphics[width=\linewidth]{overlaid-sinewave2-douglas-16}     &
-        \includegraphics[width=\linewidth]{overlaid-sinewave2-visvalingam-16} \tabularnewline \hline
+        \includegraphics[width=\linewidth]{overlaid_sinewave2_douglas_16}     &
+        \includegraphics[width=\linewidth]{overlaid_sinewave2_visvalingam_16} \tabularnewline \hline
 
         32/1024                                                               &
-        \includegraphics[width=\linewidth]{overlaid-sinewave2-douglas-32}     &
-        \includegraphics[width=\linewidth]{overlaid-sinewave2-visvalingam-32} \tabularnewline \hline
+        \includegraphics[width=\linewidth]{overlaid_sinewave2_douglas_32}     &
+        \includegraphics[width=\linewidth]{overlaid_sinewave2_visvalingam_32} \tabularnewline \hline
 
     \end{tabularx}
     \caption{{\DP} and {\VW} on example wave}
diff --git a/II/Referatas/visvalingam.sql b/II/Referatas/visvalingam.sql
index 31668cb..5e0e339 100644
--- a/II/Referatas/visvalingam.sql
+++ b/II/Referatas/visvalingam.sql
@@ -8,7 +8,7 @@ CREATE TABLE :tbl (
 INSERT INTO :tbl (geom) (
     SELECT
         ST_Multi (ST_SimplifyVW (ST_LineMerge (ST_Union (geom)),
-                :tolerance * :tolerance)) AS geoms
+                :param1 * :param1)) AS geoms
     FROM
         :src);