@inproceedings{Koikawa:20023r,
  author = "Koikawa, Takao",
  title = "{Soliton equations by the noncommutative zero curvature formulation  }",
  doi = "10.22323/1.008.0021",
  booktitle = "Proceedings of Workshop on Integrable Theories, Solitons and Duality {\textemdash} PoS(unesp2002)",
  year = 2002,
  volume = "008",
  pages = "021"
}