Vatsya, S. R. (2009). Foundations and applications of variational and perturbation methods. Nova Science Publishers.
Chicago-čujuhus (17. p.)Vatsya, S. Raj. Foundations and Applications of Variational and Perturbation Methods. Hauppauge, NY: Nova Science Publishers, 2009.
MLA-čujuhus (9. p.)Vatsya, S. Raj. Foundations and Applications of Variational and Perturbation Methods. Nova Science Publishers, 2009.
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