diff --git a/bib/complex-sys.bib b/bib/complex-sys.bib
index 3203cd5..9163e1d 100644
--- a/bib/complex-sys.bib
+++ b/bib/complex-sys.bib
@@ -39,17 +39,14 @@ keywords = "Synthesis "
 }
 
 @article{rozenbergzoom2014,
-author = {EHRENFEUCHT, ANDRZEJ and ROZENBERG, GRZEGORZ},
-title = {ZOOM STRUCTURES AND REACTION SYSTEMS YIELD EXPLORATION SYSTEMS},
+author = {Ehrenfeucht, Andrzej and Rozenberg, Grzegorz},
+title = {Zoom Structures and Reaction Systems Yield Exploration Systems},
 journal = {International Journal of Foundations of Computer Science},
 volume = {25},
 number = {03},
 pages = {275-305},
 year = {2014},
 doi = {10.1142/S0129054114500142},
-
-URL = {http://www.worldscientific.com/doi/abs/10.1142/S0129054114500142},
-eprint = {http://www.worldscientific.com/doi/pdf/10.1142/S0129054114500142}
 }
 
 @misc{wholecell,