@article{oai:nsu.repo.nii.ac.jp:00000111,
 author = {堀口, 俊二},
 issue = {11},
 journal = {新潟産業大学紀要},
 month = {Jun},
 note = {論文(Article), application/pdf},
 pages = {157--180},
 title = {On connectedness of Heegaard diagram and its cut diagram},
 year = {1994}
}