1. Symposium on Qinghai-Xizang (Tibet) Plateau;Academia Sinica,1980
2. The continental Gondwana Group and associated marine sequence of Arunachal Pradesh (NEFA), Eastern Himalaya;Achharya;Himalayan Geol.,1975
3. Facies concept, correlation and classification of Palaeozoic (Pre-Blaini) Formations of Kumaun, Garhwal and Himachal Pradesh Lesser Himalaya, India;Ahmad,1979
4. “Gondwanaland”, the concept that failed;Ahmad;Palaeobotanist,1977
5. Geochemistry and petrogenesis of the Mandi-Darla volcanics, northwestern Himalayas;Ahmad;Precambrian Res.,1986