On the stability of the linear Skorohod problem in an orthant. - Ahmed El Kharroubi; Abdelghani Ben Tahar; Abdelhak Yaacoubi (Math. Methods Oper. Res., 2002)

Variational problem in the non-negative orthant of ℝ3: reflective faces and boundary influence cones. - Ahmed El Kharroubi; Abdelhak Yaacoubi; Abdelghani Ben Tahar; Kawtar Bichard (Queueing Syst. Theory Appl., 2012)