Voir la notice de l'article dans Czech Digital Mathematics Library
@article{CMJ_1998__48_2_a0, author = {Fischer, Alexander}, title = {Approximation of almost periodic functions by periodic ones}, journal = {Czechoslovak Mathematical Journal}, pages = {193--205}, publisher = {mathdoc}, volume = {48}, number = {2}, year = {1998}, mrnumber = {1624299}, zbl = {0953.42005}, language = {en}, url = {https://geodesic-test.mathdoc.fr/item/CMJ_1998__48_2_a0/} }
Fischer, Alexander. Approximation of almost periodic functions by periodic ones. Czechoslovak Mathematical Journal, Tome 48 (1998) no. 2, pp. 193-205. https://geodesic-test.mathdoc.fr/item/CMJ_1998__48_2_a0/