@article{v003a004,
 author = {Dominik Janzing and Pawel Wocjan},
 title = {A Simple PromiseBQP-complete Matrix Problem},
 year = {2007},
 pages = {61-79},
 doi = {10.4086/toc.2007.v003a004},
 publisher = {Theory of Computing},
 journal = {Theory of Computing},
 volume = {3},
 number = {1},
 URL = {http://www.theoryofcomputing.org/articles/v003a004},
}