Sandip Das, Malay K. Sen, A. B. Roy, Douglas B. West. Interval digraphs: An analogue of interval graphs. Journal of Graph Theory, 13(2):189-202, 1989. [doi]
@article{DasSRW89,
title = {Interval digraphs: An analogue of interval graphs},
author = {Sandip Das and Malay K. Sen and A. B. Roy and Douglas B. West},
year = {1989},
doi = {10.1002/jgt.3190130206},
url = {http://dx.doi.org/10.1002/jgt.3190130206},
researchr = {https://researchr.org/publication/DasSRW89},
cites = {0},
citedby = {0},
journal = {Journal of Graph Theory},
volume = {13},
number = {2},
pages = {189-202},
}