@techreport {TR-1988-004,
   type = {Technical Report},
   author = {Andrzej Lingas, Andrzej Proskurowski},
   title = {Fast Parallel Algorithms for the Subgraph Homeomorphism & the Subgraph Isomorphism Problems for Classes of Planar Graphs},
   institution = {University of Oregon, Computer and Information Sciences Department},
   number = TR-1988-004,
   month = 4,
   year = 1988,
   note = {Available at \url{https://www.cs.uoregon.edu/Reports/TR-1988-004.pdf}},
}