frisch, R. (1964). in-seeking by the nonplex method in nonlinear programming. National Planning Institute.
Παραπομπή σε μορφή Chicago (17η εκδ.)frisch, R. In-seeking by the Nonplex Method in Nonlinear Programming. cairo: National Planning Institute, 1964.
Παραπομπή σε μορφή MLA (9th εκδ.)frisch, R. In-seeking by the Nonplex Method in Nonlinear Programming. National Planning Institute, 1964.