1. Organic metamorphism and petroleum generation in upper Cretaceous and Tertiary Systems of Hokkaido, Japan;Aihara;J. Jpn. Assoc. Petrol. Technol.,1979
2. Coalification pattern and organic metamorphism of the Paleogene System in the Japanese Islands;Aihara,1980
3. Formation and organic metamorphism of the Paleogene coal deposits in the Japanese Islands;Aihara;Ind. Miner. Tech.,1980
4. Preliminary study on organic metamorphism in coal-bearing Cenozoic System of the inner zone of Kyushu;Aihara,1980
5. Paleogeothermal influence on organic metamorphism in the neotectonics of the Japanese Islands;Aihara;23rd IASPEI (Tokyo) Assembly,1985