@article{oai:soar-ir.repo.nii.ac.jp:00012183,
 author = {ASADA,  AKIRA},
 issue = {1},
 journal = {信州大学理学部紀要},
 month = {Oct},
 note = {Article, 信州大学理学部紀要 13(1): 1-25(1978)},
 pages = {1--25},
 title = {Indexes of Some Degenerate Operators},
 volume = {13},
 year = {1978}
}