@article{DBLP:journals/tcs/Rybalov04,
  author    = {Alexander Rybalov},
  title     = {On the P-NP problem over real matrix rings},
  journal   = {Theor. Comput. Sci.},
  volume    = {314},
  number    = {1-2},
  year      = {2004},
  pages     = {281-285},
  ee        = {http://dx.doi.org/10.1016/j.tcs.2003.11.022},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}