@article{oai:rikkyo.repo.nii.ac.jp:00016685,
 issue = {1},
 journal = {Commentarii mathematici Universitatis Sancti Pauli, Rikkyo Daigaku sugaku zasshi},
 month = {Jun},
 note = {C(表紙、裏表紙)},
 title = {Cover},
 volume = {47},
 year = {1998}
}