Friedman, A. (2010). Variational principles and free-boundary problems (Dover ed.). Dover.
Chicago Style (17. basım) AtıfFriedman, Avner. Variational Principles and Free-boundary Problems. Dover ed. Mineola, N.Y: Dover, 2010.
MLA (9th ed.) AtıfFriedman, Avner. Variational Principles and Free-boundary Problems. Dover ed. Dover, 2010.
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