Citazione APA

Elsgolts, L. Differential equations and the calculus variations. Mir Publishers.

Stile di citazione Chicago

Elsgolts, L. Differential Equations and the Calculus Variations. Moscow: Mir Publishers.

Citazione MLA

Elsgolts, L. Differential Equations and the Calculus Variations. Mir Publishers.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.