@unpublished{BauerFreedenSchreiner2003,
  author  = {Frank Bauer and Willi Freeden and Michael Schreiner},
  title   = {A Tree Algorithm for Isotropic Finite Elements on the Sphere},
  institution = {Fachbereich Mathematik},
  series    = {Schriften zur Funktionalanalysis und Geomathematik},
  number    = {3},
  year    = {2003},
  url  = {http://nbn-resolving.de/urn:nbn:de:hbz:386-kluedo-12684},
}