%0 Journal Article %A Jean-Baptiste Leblond %A Mihai Gologanu %T External estimate of the yield surface of an arbitrary ellipsoid containing a confocal void %J Comptes Rendus. Mécanique %D 2008 %P 813-819 %V 336 %N 11-12 %I Elsevier %R 10.1016/j.crme.2008.10.006 %G en %F CRMECA_2008__336_11-12_813_0