%0 Journal Article %A Anil Kumar, Boina %A Paikray, Susanta Kumar %T Cost optimization inventory model for deteriorating items with trapezoidal demand rate under completely backlogged shortages in crisp and fuzzy environment %J RAIRO. Operations Research %D 2022 %P 1969-1994 %V 56 %N 3 %I EDP-Sciences %U https://www.numdam.org/articles/10.1051/ro/2022068/ %R 10.1051/ro/2022068 %G en %F RO_2022__56_3_1969_0