Adaptive topic - dependent language modelling using word - based varigrams. - Sven C. Martin; Jörg Liermann; Hermann Ney (EUROSPEECH, 1997)

Algorithms for bigram and trigram word clustering. - Sven C. Martin; Jörg Liermann; Hermann Ney (Speech Commun., 1998)

Assessment of smoothing methods and complex stochastic language modeling. - Sven C. Martin; Christoph Hamacher; Jörg Liermann; Frank Wessel; Hermann Ney (EUROSPEECH, 1999)