1. Reynolds, D.: Comparison of background normalization methods for text-independent speaker verification. In: EUROSPEECH (1997)
2. Akbacak, M., Hansen, J.H.L.: Language normalization for bilingual speaker recognition systems. In: 2007 IEEE International Conference on Acoustics, Speech and Signal Processing—ICASSP ’07, Vol. 4, pp. IV-257-IV–260 (2007)
3. Hegde, R.M., Murthy, H.A.: Automatic language identification and discrimination using the modified group delay feature. In: Proceedings of 2005 International Conference on Intelligent Sensing and Information Processing, pp. 395–399 (2005)
4. Besacier, L., Barnard, E., Karpov, A., Schultz, T.: Automatic speech recognition for under-resourced languages: A survey. Speech Commun. 56, 85–100 (2014)
5. Baby, A., Thomas, A.N.L., Consortium, T.T.S.: Resources for Indian languages. In: CBBLR—Community Based Building of Language Resources, Brno, Czech Republic: Tribun EU, pp 37–43 (2016)