@inproceedings{oai:repo.qst.go.jp:00053318, author = {Shirakawa, Yoshiyuki and 白川 芳幸}, book = {Radiation Detectors and Their Uses : Proceedings of the Workshop on Radiation Detectors and Their Uses(KEK Proceedings)}, month = {Feb}, pages = {157--163}, publisher = {KEK}, title = {Developments of Gamma Ray Directional Detectors Based on the Optical Conection with Different Types of Scintillators}, volume = {16}, year = {2002} }