Calculus of Variations and Partial Differential Equations of the First Order

L. E. Elsgolts - Differential Equations and the Calculus of Variations

Calculus of Variations and Partial Differential Equations. Proceedings of a Conf

Partial differential equations and mathematical physics. In memory of Jean Leray

PARTIAL DIFFERENTIAL EQUATIONS OF FIRST ORDER AND THEIR APPLICATIONS TO PHYSICS

Ordinary and Partial Differential Equations. Proceedings of the Eighth Conferenc

Calculus of Variations and Partial Differential Equations of the First Order, Pa

PARTIAL DIFFERENTIAL EQUATIONS IN PHYSICS Arnold Sommerfeld Hardback 1949 RARE