Philippe Poinçot Soizick Lesteven Fionn Murtagh Maps of information spaces: Assessments from astronomy. 1081-1089 2000 51 JASIS 12 db/journals/jasis/jasis51.html#PoincotLM00 http://dx.doi.org/10.1002/1097-4571(2000)9999:9999<::AID-ASI1019>3.0.CO;2-Q