Roberto Gemello Franco Mana Stefano Scanzio Pietro Laface Renato de Mori Linear hidden transformations for adaptation of hybrid ANN/HMM models. 827-835 2007 49 Speech Communication 10-11 http://dx.doi.org/10.1016/j.specom.2006.11.005 db/journals/speech/speech49.html#GemelloMSLM07