@article{10_4064_fm_76_1_43_61,
     author = {A. Steiner and E. Steiner},
     title = {Binding spaces: {A} unified completion and extension theory},
     journal = {Fundamenta Mathematicae},
     pages = {43--61},
     publisher = {mathdoc},
     volume = {76},
     number = {1},
     year = {1972},
     doi = {10.4064/fm-76-1-43-61},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-76-1-43-61/}
}