Mariusz Grech, Andrzej Kisielewicz. Černý conjecture for edge-colored digraphs with few junctions. Electronic Notes in Discrete Mathematics, 54:115-120, 2016. [doi]
@article{GrechK16,
title = {Černý conjecture for edge-colored digraphs with few junctions},
author = {Mariusz Grech and Andrzej Kisielewicz},
year = {2016},
doi = {10.1016/j.endm.2016.09.021},
url = {http://dx.doi.org/10.1016/j.endm.2016.09.021},
researchr = {https://researchr.org/publication/GrechK16},
cites = {0},
citedby = {0},
journal = {Electronic Notes in Discrete Mathematics},
volume = {54},
pages = {115-120},
}