@article{oai:ynu.repo.nii.ac.jp:00006573,
 author = {Heil, Wolfgang},
 journal = {Yokohama Mathematical Journal = 横濱市立大學紀要. D部門, 数学},
 month = {},
 note = {application/pdf},
 pages = {135--140},
 title = {ELEMENTARY SURGERY ON SEIFERT FIBER SPACES},
 volume = {22},
 year = {1974}
}