@article{01959267,
title = {Ordinary and directed combinatorial homotopy, applied to image analysis and concurrency.},
journal = {Homology, Homotopy and Applications},
volume = {5},
year = {2003},
pages = {211-231},
zbl = {1027.68140},
language = {en},
url = {http://dml.mathdoc.fr/item/01959267}
}
Grandis, Marco. Ordinary and directed combinatorial homotopy, applied to image analysis and concurrency.. Homology, Homotopy and Applications, Tome 5 (2003) pp. 211-231. http://gdmltest.u-ga.fr/item/01959267/