On (alpha_r)(gamma_s)(k)-perfect graphs
Discrete Math. 270 (2003), no. 1-3, 241--250.
BibTex references
@Article\{RV03,
author = "Rautenbach, Dieter and Volkmann, Lutz",
title = "On (alpha_r)(gamma_s)(k)-perfect graphs",
journal = "Discrete Math.",
number = "1-3",
volume = "270",
pages = "241--250",
year = "2003",
}