Approximation categories

1. Constructive Approximation. A Journal on Approximations and Expansions. Dept. of Mathematics Vanderbilt University.
2. Journal of Approximation Theory. ScienceDirect, Elsevier B.V.
3. Surveys in Approximation Theory. C. de Boor, A. Pinkus, and V. Totik. Technion, Uni Giessen, et. al.
4. History of Approximation Theory (HAT). C. de Boor, K. Kopotun, and A. Pinkus. Technion, Uni Giessen, et. al.
5. The Chebfun Team. Approximation Theory and Approximation Practice. University of Oxford.