@article{SB99,
  author      = {Faramarz F. Samavati and 
                 Richard H. Bartels},
  title       = {Multiresolution curve and surface representation: reversing subdivision rules by least-squares data fitting},
  journal     = {Computer Graphics Forum},
  volume      = {18},
  number      = {2},
  month       = {Jun},     
  year        = {1999},
  pages       = {97-119}
}