@TechReport{SCI:Car2006a,
  author =    "C.D. Carbonera and J.F. Shepherd",
  title =     "On the Existence of a Perfect Matching for
              4-regular Graphs derived from Quadrilateral
              Meshes",
  number =    "UUSCI-2006-021",
  year =      "2006",
  institution = "University of Utah",
  type =      "{SCI} Institute Technical Report",
  url =       "http://www.sci.utah.edu/publications/SCITechReports/UUSCI-2006-021.pdf",
}