%0 Journal Article %A Sychev, M. A. %T A new approach to Young measure theory, relaxation and convergence in energy %J Annales de l'I.H.P. Analyse non linéaire %D 1999 %P 773-812 %V 16 %N 6 %I Gauthier-Villars %U http://www.numdam.org/item/AIHPC_1999__16_6_773_0/ %G en %F AIHPC_1999__16_6_773_0