%0 Journal Article %A Koratti Chengalrayan Sivakumar %T A Class of Singular $R_0$-Matrices and Extensions to Semidefinite Linear Complementarity Problems %J Yugoslav journal of operations research %D 2013 %P 163 %V 23 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/YJOR_2013_23_2_a1/ %G en %F YJOR_2013_23_2_a1