%0 Journal Article %A Andrzej Czygrinow %A Vikram Kamat %T Tight co-degree condition for perfect matchings in 4-graphs %J The electronic journal of combinatorics %D 2012 %V 19 %N 2 %U http://geodesic.mathdoc.fr/articles/10.37236/2338/ %R 10.37236/2338 %F 10_37236_2338