@Incollection{ganter2007relational,
  author = {Ganter, Bernhard},
  title  = {Relational Galois Connections},

  year   = {2007},
  number = {},
  url    = {http://dx.doi.org/10.1007/978-3-540-70901-5_1},
  doi = {10.1007/978-3-540-70901-5_1},
  const  = {\ text}
}