%0 Journal Article %A Yu. S. Semenov %T Proof of a~generalization of the~conjecture of Hanna Neumann for virtually free groups %J Sbornik. Mathematics %D 1996 %P 1561-1575 %V 187 %N 10 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1996_187_10_a7/ %G en %F SM_1996_187_10_a7