change descriptions

II/Referatas/bib.bib

@@ -24,6 +24,17 @@
     pages={477}
 }
 
+@article{visvalingam1993line,
+  title={Line generalisation by repeated elimination of points},
+  author={Visvalingam, Maheswari and Whyatt, James D},
+  journal={The cartographic journal},
+  volume={30},
+  number={1},
+  pages={46--51},
+  year={1993},
+  publisher={Taylor \& Francis}
+}
+
 @article{muller1991generalization,
   title={Generalization of spatial databases},
   author={Muller, Jean-Claude},