@article{105333, author = {Jaroslav Draho\v s}, title = {A construction of the projective modification for a closure-set of a presheaf}, journal = {Commentationes Mathematicae Universitatis Carolinae}, volume = {012}, year = {1971}, pages = {117-125}, zbl = {0216.18903}, mrnumber = {0286061}, language = {en}, url = {http://dml.mathdoc.fr/item/105333} }
Drahoš, Jaroslav. A construction of the projective modification for a closure-set of a presheaf. Commentationes Mathematicae Universitatis Carolinae, Tome 012 (1971) pp. 117-125. http://gdmltest.u-ga.fr/item/105333/
Structure projective and structure inductive presheaves, Celebrazioni archimedee del secolo XX., Simposio di topologia, 1964. (1964)
Modifications of closure collections, Submitted to Czechoslovak Mathematical Journal. | Zbl 0225.54006