@techreport{12aa87a0ebb84f38b485ecf8378d70d3,
title = "New Upper Bounds for Binary/Ternary Mixed Covering Codes",
keywords = "code construction, covering code, covering radius, football pool problem, mixed code, simulated annealing, code construction, covering code, covering radius, football pool problem, mixed code, simulated annealing, code construction, covering code, covering radius, football pool problem, mixed code, simulated annealing",
author = "P. {\"O}sterg{\aa}rd and H. H{\"a}m{\"a}l{\"a}inen",
year = "1993",
language = "English",
series = "Digital Systems Laboratory, Series A: Research Reports",
publisher = "Helsinki University of Technology",
number = "22",
type = "WorkingPaper",
institution = "Helsinki University of Technology",
}