author= {Heigold, G. and Rybach, D. and Schl\\"uter, R. and Ney, H.},
title= {Investigations on Convex Optimization Using Log-Linear HMMs for Digit String Recognition},
booktitle= {Interspeech},
year= 2009,
pages= {216-219},
address= {Brighton, UK},
month= sep,
booktitlelink= {http://www.interspeech2009.org/},
pdf = {https://www-i6.informatik.rwth-aachen.de/publications/downloader.php?id=631&row=pdf}