@book{CTT100769324,
  author = {梅原雅顕 and 山田光太郎 and 佐治健太郎},
  title = {特異点をもつ曲線と曲面の幾何学},
  publisher = {丸善出版},
  year = 2017,
}

@article{CTT100875616,
  author = {Atsufumi Honda and Kosuke Naokawa and Kentaro Saji and Masaaki Umehara and Kotaro Yamada},
  title = {On the existence of four or more curved foldings with common creases and crease patterns},
  journal = {Beiträge zur Algebra und Geometrie / Contributions to Algebra and Geometry},
  year = 2021,
}

@article{CTT100636108,
  author = {Kentaro Saji and Masaaki Umehara and Kotaro Yamada},
  title = {Coherent tangent bundles and Gauss-Bonnet formulas for wave fronts},
  journal = {Journal of Geometric Analysis},
  year = 2012,
}

@article{CTT100636104,
  author = {Kentaro Saji and Masaaki Umehara and Kotaro Yamada},
  title = {A_2-singularities of hypersurfaces with non-negative sectional curvature in Euclidean space},
  journal = {Kodai Math. J.},
  year = 2011,
}

@article{CTT100622218,
  author = {Kentaro Saji and Masaaki Umehara and Kotaro Yamada},
  title = {Ak singularities of wave fronts},
  journal = {Math. Proc. Cambridge Philos. Soc.},
  year = 2009,
}

@article{CTT100622219,
  author = {Kentaro Saji and Masaaki Umehara and Kotaro Yamada},
  title = {The geometry of fronts},
  journal = {Ann. of Math.},
  year = 2009,
}