@article{RSMUP_1985__74__7_0,
     author = {Brunner, Norbert},
     title = {Spaces of urelements},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {7--13},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {74},
     year = {1985},
     mrnumber = {818710},
     zbl = {0601.54023},
     language = {en},
     url = {http://archive.numdam.org/item/RSMUP_1985__74__7_0/}
}