On the signed 2-independence number of graphs
Electron J. Graph Theory Appl. 5 (2017), 36--42.
BibTex references
@Article\{MMSV17,
author = "Moghaddam, Seyyed Mehdi Hosseini and Mojdeh, Doost Ali and Samadi, Babak and Volkmann, Lutz",
title = "On the signed 2-independence number of graphs",
journal = "Electron J. Graph Theory Appl.",
volume = "5",
pages = "36--42",
year = "2017",
note = "DOI:10.5614/ejgta.2017.5.1.4",
}