APA-referens

Erugin, N. P. (1966). Linear systems of ordinary differential equations with periodic and quasi-periodic coefficients.

Chicago-stil citat

Erugin, Nikolay P. Linear Systems of Ordinary Differential Equations with Periodic and Quasi-periodic Coefficients. Academic Press, New York, 1966.

MLA-referens

Erugin, Nikolay P. Linear Systems of Ordinary Differential Equations with Periodic and Quasi-periodic Coefficients. 1966.