Persons RUS  ENG    JOURNALS   PEOPLE   ORGANISATIONS   CONFERENCES   SEMINARS   VIDEO LIBRARY   PACKAGE AMSBIB     Tung, Chin-chu https://www.mathnet.ru/eng/person123953 List of publications on Google Scholar Publications in Math-Net.Ru Citations 1962 1. Tung Chin-chu, “Positions of limit-cycles of the system $\frac{dx}{dt}=\sum_{0\le{i+k}\le2}a_{ik}x^iy^k$, $\frac{dy}{dt}=\sum_{0\le{i+k}\le2}b_{ik}x^iy^k$”, Matematika, 6:2 (1962),  150–168      ; Sci. Sinica, 8:2 (1959), 151–171