@article{JMLR:v6:micchelli05a,
  author  = {Charles A. Micchelli and Massimiliano Pontil},
  title   = {Learning the Kernel Function via Regularization},
  journal = {Journal of Machine Learning Research},
  year    = {2005},
  volume  = {6},
  number  = {38},
  pages   = {1099--1125},
  url     = {http://jmlr.org/papers/v6/micchelli05a.html}
}