APA

Graffi D., . (1980). Nonlinear partial differential equations in physical problems. Boston [u.a.]: Pitman.

Chicago

Graffi Dario, . 1980. Nonlinear partial differential equations in physical problems. Boston [u.a.]: Pitman.

Harvard

Graffi D., . (1980). Nonlinear partial differential equations in physical problems. Boston [u.a.]: Pitman.

MLA

Graffi Dario, . Nonlinear partial differential equations in physical problems. Boston [u.a.]: Pitman. 1980.