@article{oai:tsukuba.repo.nii.ac.jp:00039397,
 author = {AKIYAMA, Shigeki and BRUNOTTE, Horst and PETHŐ, Attila and STEINER, Wolfgang},
 issue = {1},
 journal = {Tsukuba Journal of Mathematics},
 month = {},
 pages = {197--251},
 title = {Periodicity of Certain Piecewise Affine Planar Maps},
 volume = {32},
 year = {2008}
}