@incollection{NIPS2009_0942,
 title = {Slow Learners are Fast},
 author = {Martin Zinkevich and Alex Smola and John Langford},
 booktitle = {Advances in Neural Information Processing Systems 22},
 editor = {Y. Bengio and D. Schuurmans and J. Lafferty and C. K. I. Williams and A. Culotta},
 pages = {2331--2339},
 year = {2009}
}