Stakgold, I. (1968). Boundary value problems of mathematical physics. New York: Macmillan.
Trích dẫn kiểu ChicagoStakgold, Ivar. Boundary Value Problems of Mathematical Physics. New York: Macmillan, 1968.
Deismireacht MLAStakgold, Ivar. Boundary Value Problems of Mathematical Physics. New York: Macmillan, 1968.
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