We show that the decision problem for p-reinforcement, p-total rein- forcement, total restrained reinforcement, and k-rainbow reinforcement are NP-hard for bipartite graphs.
@article{bwmeta1.element.doi-10_7151_dmgt_1898, author = {Nader Jafari Rad}, title = {On the Complexity of Reinforcement in Graphs}, journal = {Discussiones Mathematicae Graph Theory}, volume = {36}, year = {2016}, pages = {877-887}, zbl = {1350.05126}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.doi-10_7151_dmgt_1898} }
Nader Jafari Rad. On the Complexity of Reinforcement in Graphs. Discussiones Mathematicae Graph Theory, Tome 36 (2016) pp. 877-887. http://gdmltest.u-ga.fr/item/bwmeta1.element.doi-10_7151_dmgt_1898/