@article{oai:tsukuba.repo.nii.ac.jp:00016163,
 author = {Negami, Seiya and Watanabe, Shin},
 issue = {1},
 journal = {Tsukuba Journal of Mathematics},
 month = {Jun},
 pages = {155--166},
 title = {Diagonal transformations of triangulation on surfaces},
 volume = {14},
 year = {1990}
}