@article{oai:tsukuba.repo.nii.ac.jp:00017119,
 author = {Ando, Naoya},
 issue = {2},
 journal = {Tsukuba Journal of Mathematics},
 month = {Dec},
 pages = {251--267},
 title = {A class of real-analytic surfaces in the 3-Euclidean space},
 volume = {26},
 year = {2002}
}