A lower bound for the distance k-domination number of trees
Results Math. 47 (2005), no. 3-4, 335--339.
BibTex references
@Article\{MV05a,
author = "Meierling, Dirk and Volkmann, Lutz",
title = "A lower bound for the distance k-domination number of trees",
journal = "Results Math.",
number = "3-4",
volume = "47",
pages = "335--339",
year = "2005",
}