Patrick A. Naylor Anastasis Kounoudes Jon Gudnason Mike Brookes Estimation of Glottal Closure Instants in Voiced Speech Using the DYPSA Algorithm. 34-43 2007 15 IEEE Transactions on Audio, Speech & Language Processing 1 http://dx.doi.org/10.1109/TASL.2006.876878 db/journals/taslp/taslp15.html#NaylorKGB07