J. Devlin, R. Zbib, Z. Huang, T. Lamar, R. Schwartz, und J. Makhoul. Proceedings of the 52nd Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers), Seite 1370--1380. Baltimore, Maryland, Association for Computational Linguistics, (Juni 2014)
A. Graves, A. Mohamed, und G. Hinton. 2013 IEEE International Conference on Acoustics, Speech and Signal Processing, Seite 6645--6649. IEEE, (Mai 2013)