Petrovsky, I. G. (1991). Lectures on partial differential equations. Dover.
Chicagoスタイル(17版)引用形式Petrovsky, Ivan Georgievich. Lectures on Partial Differential Equations. Nueva York: Dover, 1991.
MLA(9版)引用形式Petrovsky, Ivan Georgievich. Lectures on Partial Differential Equations. Dover, 1991.
警告: この引用は必ずしも正確ではありません.