Calculus of Variations and Partial Differential Equations. Springer Berlin Heidelberg.
Cita Chicago (17th ed.)Calculus of Variations and Partial Differential Equations. Springer Berlin Heidelberg.
Cita MLA (9th ed.)Calculus of Variations and Partial Differential Equations. Springer Berlin Heidelberg.
Atenció: Aquestes cites poden no estar 100% correctes.