%0 Journal Article %A Keykhaei, Reza %A Jahandideh, Mohamad Taghi %T Tangency portfolios in the LP solvable portfolio selection models %J RAIRO - Operations Research - Recherche Opérationnelle %D 2012 %P 149-158 %V 46 %N 2 %I EDP-Sciences %U http://archive.numdam.org/articles/10.1051/ro/2012012/ %R 10.1051/ro/2012012 %G en %F RO_2012__46_2_149_0