@article{CMUC_1994__35_1_a18,
     author = {Prati, Nando},
     title = {Alternative set theory with elementary classes},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {193--203},
     publisher = {mathdoc},
     volume = {35},
     number = {1},
     year = {1994},
     mrnumber = {1292595},
     zbl = {0804.03042},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1994__35_1_a18/}
}