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@article{PORMA_1988__45_1_115605, author = {Cerdeira, J. Orestes}, title = {On the complexity of covering nodes by {K} node-disjoint cycles}, journal = {Portugaliae mathematica}, pages = {25--27}, publisher = {mathdoc}, volume = {45}, number = {1}, year = {1988}, mrnumber = {0952795}, zbl = {0661.68037}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1988__45_1_115605/} }
Cerdeira, J. Orestes. On the complexity of covering nodes by K node-disjoint cycles. Portugaliae mathematica, Tome 45 (1988) no. 1, pp. 25-27. http://geodesic.mathdoc.fr/item/PORMA_1988__45_1_115605/