@article{CTT100674699,
  author = {Hisaaki Endo and Dieter Kotschick},
  title = {Failure of separation by quasi-homomorphims in mapping class groups},
  journal = {Proceedings of the American Mathematical Society},
  year = 2007,
}

@article{CTT100468422,
  author = {Hisaaki Endo and Mustafa Korkmaz and Dieter Kotschick and Burak Ozbagci and Andras Stipsicz},
  title = {Commutators, Lefschetz fibrations and signatures of surface bundles},
  journal = {Topology},
  year = 2002,
}

@article{CTT100468421,
  author = {Hisaaki Endo and Dieter Kotschick},
  title = {Bounded cohomology and non-uniform perfection of mapping class groups},
  journal = {Inventiones mathematicae},
  year = 2001,
}