@ARTICLE{
author={Blagojevic Pavle VM,Bukh Boris,Karasev Roman},
year={2013},
title={Turan Numbers for Free Graphs: Topological Obstructions and Algebraic Constructions},
journal={ISRAEL JOURNAL OF MATHEMATICS},
volume={197},
number={1},
pages={199-214},
document_type={Article},
}