A
[ABO97] Eric Allender, Robert Beals, and Mitsunori Ogihara. The Complexity of Matrix Rank and Feasible Systems of Linear Equations. Technical Report 97-40, Rutgers University, New Jersey, USA, September 1997. 
@techreport{TR-DIMACS9740,
  author =              {Allender, Eric and Beals, Robert and Ogihara,
                         Mitsunori},
  title =               {The Complexity of Matrix Rank and Feasible Systems
                         of Linear Equations},
  number =              {97-40},
  year =                {1997},
  month =               sep,
  institution =         {Rutgers University, New Jersey, USA},
}
List of authors