APA (7th ed.) Citation

Lavrentʹev, M. M. (1967). Some improperly posed problems of mathematical physics. Springer.

Chicago Style (17th ed.) Citation

Lavrentʹev, Michail Michajlovič. Some Improperly Posed Problems of Mathematical Physics. Berlin [u.a.]: Springer, 1967.

MLA (9th ed.) Citation

Lavrentʹev, Michail Michajlovič. Some Improperly Posed Problems of Mathematical Physics. Springer, 1967.