William R. Pulleyblank. Minimum node covers and 2-bicritical graphs. Math. Program., 17(1):91-103, 1979. [doi]
@article{Pulleyblank79-0,
title = {Minimum node covers and 2-bicritical graphs},
author = {William R. Pulleyblank},
year = {1979},
doi = {10.1007/BF01588228},
url = {http://dx.doi.org/10.1007/BF01588228},
researchr = {https://researchr.org/publication/Pulleyblank79-0},
cites = {0},
citedby = {0},
journal = {Math. Program.},
volume = {17},
number = {1},
pages = {91-103},
}