@techreport {TR-1997-003,
   type = {Technical Report},
   author = {Arthur Farley, Andrzej Proskurowski, Miroslawa Skowronska, Maciej Syslo},
   title = {Hamiltonicity of Amalgams},
   institution = {University of Oregon, Computer and Information Sciences Department},
   number = TR-1997-003,
   month = 2,
   year = 1997,
   note = {Available at \url{https://www.cs.uoregon.edu/Reports/TR-1997-003.pdf}},
}