Sergey Bereg, Adrian Dumitrescu, Minghui Jiang. On Covering Problems of Rado. In Joachim Gudmundsson, editor, Algorithm Theory - SWAT 2008, 11th Scandinavian Workshop on Algorithm Theory, Gothenburg, Sweden, July 2-4, 2008, Proceedings. Volume 5124 of Lecture Notes in Computer Science, pages 294-305, Springer, 2008. [doi]
Abstract is missing.