The ratio of the irredundance and domination number of a graph
Discrete Math. 178 (1998), no. 1-3, 221--228.
BibTex references
@Article\{Vol98,
author = "Volkmann, Lutz",
title = "The ratio of the irredundance and domination number of a graph",
journal = "Discrete Math.",
number = "1-3",
volume = "178",
pages = "221--228",
year = "1998",
}