Voir la notice de l'article provenant de la source Hellenic Digital Mathematics Library
@article{EUG_1990__26_a3, author = {S. Grekas}, title = {On idempotent {Liftings}}, journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\Gamma} }, pages = {47-52}, publisher = {mathdoc}, volume = {26}, year = {1990}, language = {gr}, url = {http://geodesic.mathdoc.fr/item/EUG_1990__26_a3/} }
S. Grekas. On idempotent Liftings. Ευκλείδης Γ , Tome 26 (1990), p. 47-52. http://geodesic.mathdoc.fr/item/EUG_1990__26_a3/