diff --git a/IV/bib.bib b/IV/bib.bib
index d1d0a9c..e2acbb3 100644
--- a/IV/bib.bib
+++ b/IV/bib.bib
@@ -169,3 +169,12 @@
   year={1894},
   publisher={Teubner}
 }
+
+@book{landau2000handbuch,
+  title={Handbuch der Lehre von der Verteilung der Primzahlen},
+  author={Landau, Edmund},
+  volume={1},
+  year={2000},
+  publisher={Foo Bar},
+}
+
diff --git a/IV/mj-msc.tex b/IV/mj-msc.tex
index eccd0f5..6ed45fb 100644
--- a/IV/mj-msc.tex
+++ b/IV/mj-msc.tex
@@ -8,7 +8,6 @@
 \usepackage[maxbibnames=99,style=numeric,sorting=none]{biblatex}
 \addbibresource{bib.bib}
 \usepackage[
-    pdftex,
     pdfusetitle,
     pdfkeywords={Line Generalization,Cartographic Line Generalization,Wang--M{\"u}ller},
     pdfborderstyle={/S/U/W 0} % /S/U/W 1 to enable reasonable decorations
@@ -49,7 +48,7 @@
 \newcommand{\DP}{Douglas \& Peucker}
 \newcommand{\VW}{Visvalingam--Whyatt}
 \newcommand{\WM}{Wang--M{\"u}ller}
-\newcommand{\MYTITLE}{Cartographic Generalization of Lines using free software (example of rivers)}
+\newcommand{\MYTITLE}{Cartographic Line Generalization (example of rivers)}
 \newcommand{\MYAUTHOR}{Motiejus Jakštys}
 
 \title{\MYTITLE}
@@ -367,9 +366,9 @@ This section defines vocabulary and terms as defined in the rest of the paper.
         $O(n)$, the time it takes to execute the algorithm is proportional to
         $n$. Conversely, if complexity is $O(n^2)$, then the time it takes to
         execute the algorithm is quadratic. $O$ notation was first suggested by
-        Bachmann\cite{bachmann1894analytische} in late XIX'th century, and
-        adopted for computer science by Donald Knuth\cite{knuth1976big} in
-        1970s.
+        Bachmann\cite{bachmann1894analytische} and
+        Laundau\cite{landau2000handbuch} in late XIX'th century, and adopted
+        for computer science by Donald Knuth\cite{knuth1976big} in 1970s.
 
 \end{description}