@article{CUV:2004a,
  title       = "Recursive Coalgebras from Comonads",
  author      = "Venanzio Capretta and Tarmo Uustalu and Varmo Vene",
  journal     = "Electronic Notes in Theoretical Computer Science",
  volume      = 106,
  note        = "Proceedings of the Workshop on Coalgebraic Methods in Computer Science (CMCS 2004)"
  pages       = "43--61",
  year        = 2004
}