@techreport {TR-1982-005,
   type = {Technical Report},
   author = {Andrzej Proskurowski, Maciej M. Syslo },
   title = {Efficient Vertex- and Edge-Coloring of Outerplanar Graphs},
   institution = {University of Oregon, Computer and Information Sciences Department},
   number = TR-1982-005,
   year = 1982,
   note = {Available at \url{https://www.cs.uoregon.edu/Reports/TR-1982-005.pdf}},
}