| | Podolchak, N. Improving administrative management costs using optimization modeling [Текст] / N. Podolchak, L. Melnyk, B. Chepil // Econtechmod : intern. quart. j. on econ. of technology a. modelling processes. — Lublin ; Rzeszow : Polish Acad. of Sciences Branch, 2012. — No. 1. — P. 75-80. |
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