EXACT SOLUTIONS OF NONLINEAR EQUATIONS OF FIELD IN FORM OF CIRCULARLY POLARIZED WAVES Article TERLETSKII A.Y. Doklady Akademii nauk SSSR. Mezhdunarodnaya Kniga, Moscow, Russian Federation. Vol. 226. 1976. P. 292-294
ONE SINGULARLY PERTURBED SYSTEM Article DOROFEEV I.F. Doklady Akademii nauk SSSR. Mezhdunarodnaya Kniga, Moscow, Russian Federation. Vol. 226. 1976. P. 500-502