@article{RM_1988_43_4_a25, author = {L. B. Shapiro}, title = {The~category characteristic of a~hyperspace}, journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova}, pages = {233--234}, publisher = {mathdoc}, volume = {43}, number = {4}, year = {1988}, language = {en}, url = {http://geodesic.mathdoc.fr/item/RM_1988_43_4_a25/} }