author= {Heigold, Georg and Ney, Hermann and Schl{\\"u}ter, Ralf},
title= {Investigations on an EM-Style Optimization Algorithm for Discriminative Training of HMMs},
journal= {IEEE Transactions on Audio, Speech, and Language Processing},
pages= {2616-2626},
volume= {21},
number= {12},
year= 2013,
month= dec,
journallink= {http://www.signalprocessingsociety.org/publications/periodicals/taslp/},
pdf = {https://www-i6.informatik.rwth-aachen.de/publications/downloader.php?id=909&row=pdf}