Polak, E. (1972) Computational methods in optimization : a unified approach [book]. 2. printing, Mathematics in science and engineering. 2. printing. New York [u.a.]: Acad. Press (Mathematics in science and engineering, 77).

Polak, Elijah. Computational methods in optimization : a unified approach. Book. Mathematics in science and engineering. 2. printing. Mathematics in science and engineering 77. New York [u.a.]: Acad. Press, [1972?], New York [u.a.]: Acad. Press, [1972?].

Polak, E. (ca. 1972). Computational methods in optimization : a unified approach [Book]. In Mathematics in science and engineering (2. printing). Acad. Press.

Polak, E. „Computational methods in optimization : a unified approach“. Mathematics in science and engineering, 2. printing, book, Acad. Press, 1972.

POLAK, Elijah, 1972. Computational methods in optimization : a unified approach. 2. printing. New York [u.a.]: Acad. Press. Mathematics in science and engineering, 77. ISBN 0125593503