@article{DBLP:journals/siamcomp/HaskinsR73,
author = {Loren Haskins and
Donald J. Rose},
title = {Toward Characterization of Perfect Elimination Digraphs},
journal = {SIAM J. Comput.},
volume = {2},
number = {4},
year = {1973},
pages = {217-224},
ee = {http://dx.doi.org/10.1137/0202018},
bibsource = {DBLP, http://dblp.uni-trier.de}
}