[1] |
Besthehorn M., Dissertation (1975) |
[2] |
Bestehorn M., Schriftenreihe des Rechenzentrums der Universität Münster Nr. (1977) |
[3] |
De Boor C., Approximation with Special Emphasis on Spline Functions pp 157– (1969) |
[4] |
Efimov N. V., Soviet. Math. Dokl. 2 pp 1226– (1961) |
[5] |
Eichner, L. 1977. Approximation by Ratios of Exponentials. Constructive Function Theory. June1977, Sofia. Proceedings Blagoevgrad. (in print) |
[6] |
Haines L. H., J. Math. Anal. Appl. 21 pp 277– (1968) · Zbl 0155.12903 · doi:10.1016/0022-247X(68)90213-8 |
[7] |
Hoffmann K. -H., Lecture Notes in Mathematics Nr. 556 pp 237– (1976) · doi:10.1007/BFb0087411 |
[8] |
Janben P., Dissertation (1970) |
[9] |
Mosevich J. W., Math. Comp. 31 pp 139– (1977) |
[10] |
Schmidt E., J. Approx. Th. 3 pp 445– (1970) · Zbl 0212.09103 · doi:10.1016/0021-9045(70)90045-6 |
[11] |
Singer I., Best Approximation in Normed Linear Spaces by Elements of Linear Subspaces (1970) · Zbl 0197.38601 · doi:10.1007/978-3-662-41583-2 |
[12] |
Werner H., Approximation Theory pp 109– (1970) |
[13] |
Zedek M., Israel J. Math. 3 pp 81– (1965) · Zbl 0139.03705 · doi:10.1007/BF02760031 |