Lectures on the theory of group properties of differential equations /
xi, 120 p. : illustrations ; 24 cm. Translated by E D Avdonina and N H Ibragimov. Lie groups. Differential equations. Avdonina E D.Ibragimov, N H.
xi, 120 p. : illustrations ; 24 cm. Translated by E D Avdonina and N H Ibragimov. Lie groups. Differential equations. Avdonina E D.Ibragimov, N H.