1. R. Leonard, G. Doddington, Automatic language identification. Technical Report RADC-TR-74-200 (Air Force Rome Air Development Center, Technical Report) August 1974
2. R. Leonard, Language Recognition Test and Evaluation. Technical Report RADCTR-80-83 (Air Force Rome Air Development Center, Technical Report). March 1980
3. A.S. House, E.P. Neuberg, Toward automatic identification of the languages of an utterance. J. Acoust. Soc. Am. 62(3), 708–713 (1977)
4. K.P. Li, T.J. Edwards, Statistical models for automatic language identification, in International Conference on Acoustics, Speech, and Signal Processing (ICASSP), pp. 884–887, April 1980
5. L.F. Lamel, J.L. Gauvain, Cross lingual experiments with phone recognition. in International Conference on Acoustics, Speech, and Signal Processing (ICASSP), pp. 507–510, April 1993