American Mathematical Society translations, series 2 creator Kusnirenko, A. G. ; auth. Katok, A. B. ; jt. auth. Alekseev, V. M. ; jt. auth. text Providence American Mathematical Society 1981 monographic V.116 - v, 169p. Bibl. By A. G. Kusnirenko, A. B. Katok and V. M. Alekseev 510.6 Am512.116