Partial differential equations in physics. Translated by Ernst G. Straus.
Sommerfeld, Arnold
Partial differential equations in physics. Translated by Ernst G. Straus. - New York Academic Press 1949 - Pure and Applied Mathematics, A Series of Monographs and Textbooks. :Vol. 1 .
Partial differential equations in physics. Translated by Ernst G. Straus. - New York Academic Press 1949 - Pure and Applied Mathematics, A Series of Monographs and Textbooks. :Vol. 1 .