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@article{10_21136_CMJ_1971_101057, author = {Pechanec-Draho\v{s}, Jaroslav}, title = {Modifications of closure collections}, journal = {Czechoslovak Mathematical Journal}, pages = {577--589}, publisher = {mathdoc}, volume = {21}, number = {4}, year = {1971}, doi = {10.21136/CMJ.1971.101057}, mrnumber = {0487957}, zbl = {0225.54006}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1971.101057/} }
TY - JOUR AU - Pechanec-Drahoš, Jaroslav TI - Modifications of closure collections JO - Czechoslovak Mathematical Journal PY - 1971 SP - 577 EP - 589 VL - 21 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1971.101057/ DO - 10.21136/CMJ.1971.101057 LA - en ID - 10_21136_CMJ_1971_101057 ER -
Pechanec-Drahoš, Jaroslav. Modifications of closure collections. Czechoslovak Mathematical Journal, Tome 21 (1971) no. 4, pp. 577-589. doi : 10.21136/CMJ.1971.101057. http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1971.101057/
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