@article{AUCMP_2009_50_1_a4,
     author = {Kepka, Tom\'a\v{s} and Korbel\'a\v{r}, Miroslav},
     title = {Various examples of parasemifields},
     journal = {Acta Universitatis Carolinae. Mathematica et Physica},
     pages = {61--72},
     year = {2009},
     volume = {50},
     number = {1},
     mrnumber = {2569469},
     zbl = {1232.12010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUCMP_2009_50_1_a4/}
}