1. Geological controls on the topological properties of some trellis channel networks;Abrahams;Bull. Geol. Soc. Am.,1983
2. On valley trends in the Qinghai-Xizhang Plateau and the neotectonic stress field;Ai,1985
3. The tectonic stress field in North China;Ai;J. Lanzhou Univ.,1982
4. On the connection between the neotectonic stress field and catastrophic landslides;Ai,1984
5. The seismotectonic stress field in the Chinese craton;Ai;Northwest. Seismol. J.,1984