@article{oai:repository.dl.itc.u-tokyo.ac.jp:00034755, author = {Iida, Kumizi}, issue = {2}, journal = {東京帝國大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, Tokyo Imperial University}, month = {Jun}, note = {application/pdf}, pages = {433--456}, title = {Experiments on the Visco-elastic Properties of Pitchlike Materials. (2)}, volume = {13}, year = {1935} }