Citation: Jh. Guo et Dy. Gan, REPRESENTING CHARACTERISTIC HOMOLOGY CLASSES OF MCP(2)NUMBER-N(CP)OVER-BAR(2), Proceedings of the American Mathematical Society, 121(4), 1994, pp. 1251-1255
Citation: Dy. Gan et Jh. Guo, EMBEDDINGS AND IMMERSIONS OF A 2-SPHERE IN 4-MANIFOLDS, Proceedings of the American Mathematical Society, 118(4), 1993, pp. 1323-1330