@inbook{12514,
  author = {Yvon Halbwachs and {\O}yvind Hjelle},
  title = {Generalized Maps in Geological Modeling: Object-Oriented Design of Topological Kernels},
  year = {1999},
  journal = {Advances in Software Tools for Scientific Computing},
  pages = {339 - 356},
  publisher = {Springer},
  editor = {Hans Langtangen and Are Bruaset and E. Quak},
}