Não informado. (1952). Journal of the Operations Research Society of America. Operations Research Society of America.
Chicago-referens (17:e uppl.)Não informado. Journal of the Operations Research Society of America. Baltimore, Md: Operations Research Society of America, 1952.
MLA-referens (8:e uppl.)Não informado. Journal of the Operations Research Society of America. Operations Research Society of America, 1952.
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