Fred R. McMorris, Henry Martyn Mulder. Subpath acyclic digraphs. Discrete Mathematics, 154(1-3):189-201, 1996. [doi]
@article{McMorrisM96,
title = {Subpath acyclic digraphs},
author = {Fred R. McMorris and Henry Martyn Mulder},
year = {1996},
doi = {10.1016/0012-365X(94)00317-C},
url = {http://dx.doi.org/10.1016/0012-365X(94)00317-C},
researchr = {https://researchr.org/publication/McMorrisM96},
cites = {0},
citedby = {0},
journal = {Discrete Mathematics},
volume = {154},
number = {1-3},
pages = {189-201},
}