Use of the interior-point method for correcting and solving inconsistent linear inequality systems. Popescu, Elena (2001) Analele Ştiinţifice ale Universităţii “Ovidius" Constanţa. Seria: Matematică
Using linear programming in Petri net analysis Jean B. Lasserre, Philippe Mahey (1989) RAIRO - Operations Research - Recherche Opérationnelle