Rektorys, K. (1980). Variational methods in mathematics, science and engineering (2nd edition.). D. Reidel Publishing Company.
Chicago Style (17th ed.) CitationRektorys, Karel. Variational Methods in Mathematics, Science and Engineering. 2nd edition. Dordrecht: D. Reidel Publishing Company, 1980.
MLA (8th ed.) CitationRektorys, Karel. Variational Methods in Mathematics, Science and Engineering. 2nd edition. D. Reidel Publishing Company, 1980.
Warning: These citations may not always be 100% accurate.