Signed k-independence in digraphs
Util. Math. 94 (2014), 183-197.
BibTex references
@Article\{Vol14a,
author = "Volkmann, Lutz",
title = "Signed k-independence in digraphs",
journal = "Util. Math.",
volume = "94",
pages = "183-197",
year = "2014",
}