@article{10_4064_ap_52_1_87_95,
     author = {Mieczys{\l}aw Kucharzewski and Brunon Szoci\'nski and Marek \.Zabka},
     title = {On the relations between abstract and geometrical equivalence of abstract objects},
     journal = {Annales Polonici Mathematici},
     pages = {87--95},
     publisher = {mathdoc},
     volume = {52},
     number = {1},
     year = {1990},
     doi = {10.4064/ap-52-1-87-95},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-52-1-87-95/}
}