QD-an algorithm for non-linear inverse filtering. - Per Hedelin; Gunnar Hult (ICASSP, 1981)

Maximum likelihood parameter estimation with a min/Max criterion. - Per Hedelin; Gunnar Hult (ICASSP, 1983)

Some remarks on a halting criterion for iterative low-pass filtering in a recently proposed pitch detection algorithm. - Gunnar Hult (Speech Commun., 1991)

Cost232: speech recognition over the telephone line. - Andrea Paoloni; Torbjørn Svendsen; Bernhard Kaspar; Denis Johnston; Gunnar Hult (EUROSPEECH, 1993)