@article{oai:ir.kagoshima-u.ac.jp:00003957,
 author = {SAKAI, Koukichi},
 journal = {鹿児島大学理学部紀要, Reports of the Faculty of Science, Kagoshima University},
 month = {Dec},
 pages = {1--8},
 title = {On Generative Numbers},
 volume = {32},
 year = {1999}
}