On the Easy Use of Scientific Computing Services for Large Scale Linear Algebra and Parallel Decision Making with the P-Grade Portal. - Hrachya V. Astsatryan; Vladimir Sahakyan; Yuri Shoukouryan; Michel J. Daydé; Aurélie Hurault; Ronan Guivarch; Harutyun Terzyan; Levon Hovhannisyan (J. Grid Comput., 2013)