@article{CMUC_1987__28_4_a10,
     author = {H\'ajek, Petr},
     title = {Partial conservativity revisited},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {679--690},
     publisher = {mathdoc},
     volume = {28},
     number = {4},
     year = {1987},
     mrnumber = {928683},
     zbl = {0679.03025},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1987__28_4_a10/}
}