A note on maximum independent sets and minimum clique partitions in unit disk graphs and penny graphs: complexity and approximationMarcia R. Cerioli, Luerbio Faria, Talita O. Ferreira and Fábio ProttiRAIRO-Theor. Inf. Appl., 45 3 (2011) 331-346DOI: https://doi.org/10.1051/ita/2011106
