APA aipamena

Egorov, I. V. (1986). Linear differential equations of principal type. Consultants Bureau.

Chicago Style aipamena

Egorov, I︠U︡. V. Linear Differential Equations of Principal Type. New York ; London: Consultants Bureau, 1986.

MLA aipamena

Egorov, I︠U︡. V. Linear Differential Equations of Principal Type. Consultants Bureau, 1986.