@inproceedings{universalkernelsonnonstandardinput,
  title = {Universal Kernels on Non-Standard Input Spaces},
  author = {Andreas Christmann and Ingo Steinwart},
  year = {2010},
  booktitle = {NeurIPS 2010 12},
  url = {http://papers.nips.cc/paper/4168-universal-kernels-on-non-standard-input-spaces},
}