Voir la notice de l'article provenant de la source Math-Net.Ru
@article{TRSPY_1967_93_a12, author = {Phan {\DJ}{\`\i}ni Di\^eu}, title = {On closed and open sets in constructive topological spaces}, journal = {Informatics and Automation}, pages = {250--256}, publisher = {mathdoc}, volume = {93}, year = {1967}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TRSPY_1967_93_a12/} }
Phan Đìni Diêu. On closed and open sets in constructive topological spaces. Informatics and Automation, Problems of the constructive direction in mathematics. Part 4, Tome 93 (1967), pp. 250-256. http://geodesic.mathdoc.fr/item/TRSPY_1967_93_a12/