Group classification of quasilinear elliptic-type equations. II. Invariance under solvable Lie algebras von Lagno, V. I., Spichak, S. V., Лагно, В. I., Спічак, С. В.

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Linear and nonlinear representations of Galilei groups in two-dimensional space-time von Lagno, V. I., Fushchich, V. I., Лагно, В. I., Фущич, В. І.

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On new realizations of the poincare groups P (1,2) and P(2, 2) von Zhdanov, R. Z., Lagno, V. I., Жданов, Р. З., Лагно, В. И., Жданов, Р. З., Лагно, В. И.

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Reduction of the self-dual Yang-Mills equations I. Poincaré group von Fushchich, V. I., Lagno, V. I., Zhdanov, R. Z., Фущич, В. І., Лагно, В. I., Жданов, Р. З.

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Subalgebras of the Poincare algebra $AP (2, 3)$ and symmetry reduction of the nonlinear ultrahуperbolic d’Alambert equation. I von Barannik , L. F., Lagno , V. I., Fushchich , V. I., Баранник , Л. Ф., Лагно , В И., Фущич , В. И.

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