@article{oai:repository.dl.itc.u-tokyo.ac.jp:00037747,
 author = {Takanouchi, Tanzo},
 journal = {Journal of the College of Science, Imperial University of Tokyo},
 month = {Nov},
 note = {application/pdf},
 pages = {1--28},
 title = {On the Classes of Congruent Integers in an Algebraic Korper},
 volume = {36},
 year = {1913}
}