@article{oai:repository.dl.itc.u-tokyo.ac.jp:00033384, author = {Maruyama, Takuo}, issue = {1}, journal = {東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo}, month = {Mar}, note = {application/pdf}, pages = {1--29}, title = {1. Stress Fields in the Neighborhood of α Crack}, volume = {47}, year = {1969} }