On packing and covering numbers of graphs
Discrete Math. 96 (1991), no. 3, 229--238.
BibTex references
@Article\{TV91a,
author = "Topp, Jerzy and Volkmann, Lutz",
title = "On packing and covering numbers of graphs",
journal = "Discrete Math.",
number = "3",
volume = "96",
pages = "229--238",
year = "1991",
}