Imperfect reworking process consideration in integrated inventory model under permissible delay in payments. Lo, Ming-Cheng, Yang, Ming-Feng (2008) Mathematical Problems in Engineering
Incomplete Markets: the concept of generalized equilibrium and its existence theorem. V. M. MARAKULIN (1999) Revista de la Real Academia de Ciencias Exactas Físicas y Naturales
Investment/financial planning with endogenous lifetimes : a heuristic approach to mixed-integer programming Wim G. Van Hulst, Jan Th. Van Lieshout (1977) RAIRO - Operations Research - Recherche Opérationnelle