@article{SM_1973_19_1_a2,
     author = {N. V. Velichko},
     title = {On $p$-spaces and their continuous maps},
     journal = {Sbornik. Mathematics},
     pages = {35--46},
     publisher = {mathdoc},
     volume = {19},
     number = {1},
     year = {1973},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1973_19_1_a2/}
}