Stefan Grünewald, Eckhard Steffen. Chromatic-index-critical graphs of even order. Journal of Graph Theory, 30(1):27-36, 1999. [doi]
@article{GrunewaldS99-0,
title = {Chromatic-index-critical graphs of even order},
author = {Stefan Grünewald and Eckhard Steffen},
year = {1999},
doi = {10.1002/(SICI)1097-0118(199901)30:1<27::AID-JGT4>3.0.CO;2-Z},
url = {http://dx.doi.org/10.1002/(SICI)1097-0118(199901)30:1<27::AID-JGT4>3.0.CO;2-Z},
researchr = {https://researchr.org/publication/GrunewaldS99-0},
cites = {0},
citedby = {0},
journal = {Journal of Graph Theory},
volume = {30},
number = {1},
pages = {27-36},
}