1. Almost Periodic Functions and Functional Equations;Amerio,1971
2. On a fuzzy trigonometric approximation theorem of Weierstrass-type;Anastassiou;J. Fuzzy Math,2001
3. Almost Periodic Functions;Corduneanu,1968
4. Almost periodicity enforced by Coulomb friction;Deimling;Adv. Differential Equations,1996
5. Constructive Approximation, Polynomials and Splines Approximation;Devore,1993