Παραπομπή APA

Eastham, M. (1973). Spectral theory of periodic differential equations. Scottish academic press.

Παραπομπή Chicago Style

Eastham, MSP. Spectral Theory of Periodic Differential Equations. Scottish academic press, 1973.

Παραπομπή MLA

Eastham, MSP. Spectral Theory of Periodic Differential Equations. Scottish academic press, 1973.

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