V. N. Alekseenko, “The integrals of the motion of nonlinear equations of Schrödinger type”, Differ. Uravn., 12:6 (1976), 1121–1122
2.
V. N. Alekseenko, “A mechanism of limiting the development of self-focusing”, Prikl. Mekh. Tekh. Fiz., 17:6 (1976), 9–10; J. Appl. Mech. Tech. Phys., 17:6 (1976), 752–753
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