@article{ARM_1966_2_2_a3,
     author = {Kar\'asek, Ji\v{r}{\'\i}},
     title = {On isotone and homomorphic maps of ordered partial groupoids},
     journal = {Archivum mathematicum},
     pages = {71--77},
     year = {1966},
     volume = {2},
     number = {2},
     mrnumber = {0199300},
     zbl = {0209.03901},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_1966_2_2_a3/}
}