Não informado. (2000). Informs. Institute for Operations Research and the Management Sciences.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Informs. Baltimore, Md: Institute for Operations Research and the Management Sciences, 2000.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Informs. Institute for Operations Research and the Management Sciences, 2000.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.