@article{oai:tsukuba.repo.nii.ac.jp:00015724,
 author = {Morita, Jun},
 issue = {1},
 journal = {Tsukuba Journal of Mathematics},
 month = {Jun},
 pages = {151--153},
 title = {A transformation group of the Pythagorean numbers},
 volume = {10},
 year = {1986}
}