vol. 36, no. 3 (2016)

The hardness of the independence and matching clutter of a graph
Sasun Hambardzumyan, Vahan V. Mkrtchyan, Vahe L. Musoyan, Hovhannes Sargsyan
Opuscula Math. 36, no. 3 (2016), 375-397, http://dx.doi.org/10.7494/OpMath.2016.36.3.375