@inproceedings{Lee+etal09:convDBN,
	title = {Convolutional Deep Belief Networks for Scalable Unsupervised Learning of Hierarchical Representations},
	author = {Lee, Honglak and Grosse, Roger and Ranganath, Rajesh and Ng, Andrew Y.},
	booktitle = {Proceedings of the 26th International Conference on Machine Learning},
	year = {2009},
	pages = {609--616},
}