@article{JMLR:v14:culp13a,
  author  = {Mark Vere Culp and Kenneth Joseph Ryan},
  title   = {Joint Harmonic Functions and Their Supervised Connections},
  journal = {Journal of Machine Learning Research},
  year    = {2013},
  volume  = {14},
  number  = {117},
  pages   = {3721--3752},
  url     = {http://jmlr.org/papers/v14/culp13a.html}
}