@inproceedings{ijcai2009p201,
  title     = {Semi-Supervised Classification Using Sparse Gaussian Process Regression},
  author    = {Patel, Amrish and Sundararajan, S. and Shevade, Shirish K.},
  booktitle = {Proceedings of the Twenty-First International Joint Conference on
               Artificial Intelligence, {IJCAI-09}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {Hiroaki Kitano},
  pages     = {1193--1197},
  year      = {2009},
  url       = {https://ijcai.org/proceedings/2009/201},
}