Guchhait, Partha . On some inventory models in imprecise environment / researched by Partha Guchhait; guided by S K Mondal and M K Maiti. - Midnapore : Vidyasagar University , 2013. - v,279p. 45 : figs. ; 29cm Document represent Ph.D Thesis Subjects--Index Terms: MATHEMATICAL MODELS OPERATIONS RESEARCH Dewey Class. No.: 519.83 / GUC/O