@Book{hartman-2011,
  author       = {Gregory Hartman},
  title        = {Fundamentals of Matrix Algebra},
  publisher    = {Self-published},
  year         = 2011,
  edition      = 3,
  note         = {Version 3.1110},
  URL          = {http://www.apexcalculus.com/other-texts},
}