@Article{ ste02, author = { Stepanov, Eugene }, title = { Relaxation and convexity of functionals with pointwise nonlocality }, journal = { Proc. Amer. Math. Soc. }, year = { 2002 }, volume = { 130 }, number = { 2 }, pages = { 433-442 }, URL = { http://cvgmt.sns.it/paper/702/ }, note = { cvgmt preprint} }