@article{CMJ_2007__57_2_a7,
     author = {Mo\v{c}ko\v{r}, Ji\v{r}{\'\i}},
     title = {Extensional subobjects in categories of $\Omega$-fuzzy sets},
     journal = {Czechoslovak Mathematical Journal},
     pages = {631--645},
     publisher = {mathdoc},
     volume = {57},
     number = {2},
     year = {2007},
     mrnumber = {2337619},
     zbl = {1174.06320},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_2007__57_2_a7/}
}