@article{RSMUP_1976__56__67_0,
     author = {Makowsky, J. A. and Marcja, A.},
     title = {Problemi di decidibilit\`a in logica topologica},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {67--78},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {56},
     year = {1976},
     mrnumber = {476473},
     zbl = {0402.03020},
     language = {it},
     url = {http://www.numdam.org/item/RSMUP_1976__56__67_0/}
}