@article{oai:soar-ir.repo.nii.ac.jp:00012133,
 author = {KAMIYA,  HISAO},
 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 20(1): 1-11(1985)},
 pages = {1--11},
 title = {Singular points of curve families on surfaces},
 volume = {20},
 year = {1985}
}