@article{oai:repository.dl.itc.u-tokyo.ac.jp:00039703, author = {Nakamula, Ken and Shintani, T.}, issue = {3}, journal = {Journal of the Faculty of Science, the University of Tokyo. Sect. 1 A, Mathematics = 東京大学理学部紀要. 第1類A, 数学}, month = {Dec}, note = {application/pdf}, pages = {701--713}, title = {On a fundamental domain of $R_+ ^3$ for the action of the group of totally positive units of a cyclic cubic number field}, volume = {24}, year = {1977} }