%0 Journal Article %A Clint McCrory %A Adam Parusiński %T Virtual Betti numbers of real algebraic varieties %J Comptes Rendus. Mathématique %D 2003 %P 763-768 %V 336 %N 9 %I Elsevier %R 10.1016/S1631-073X(03)00168-7 %G en %F CRMATH_2003__336_9_763_0