@article{v004a003,
 author = {Avi Wigderson and David Xiao},
 title = {Derandomizing the Ahlswede-Winter matrix-valued Chernoff bound using pessimistic estimators, and applications},
 journal = {Theory of Computing},
 year = {2007},
 pages = {53-76},
 publisher = {Theory of Computing},
 volume = {4},
 number = {1},
 URL = {http://www.theoryofcomputing.org/articles/v004a003},
 eprint = {toc:v004/a003},
}