Non-Lie ansatzen and conditional symmetry of the nonlinear Schrodinger equation
English version (Springer): Ukrainian Mathematical Journal 43 (1991), no. 12, pp 1507-1515.
Citation Example: Egorchenko I. A., Fushchich V. I. Non-Lie ansatzen and conditional symmetry of the nonlinear Schrodinger equation // Ukr. Mat. Zh. - 1991. - 43, № 12. - pp. 1620–1628.
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