@book{ Solr-acta42162, title = {Discretization methods for nonconvex differential inclusions}, series = {Electronic journal of qualitative theory of differential equations}, author = {Yarou Mustapha}, year = {2009}, url = {http://acta.bibl.u-szeged.hu/42162/1/ejqtde_2009_012_001-010.pdf} }