@article{KYB_2012__48_1_a7,
     author = {Sk\v{r}iv\'anek, Jaroslav},
     title = {Bounds of general {Fr\'echet} classes},
     journal = {Kybernetika},
     pages = {130--143},
     publisher = {mathdoc},
     volume = {48},
     number = {1},
     year = {2012},
     mrnumber = {2932932},
     zbl = {1251.60015},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_2012__48_1_a7/}
}