1. Betz, C., Cámera, G.A., Gzyl, H.: Bounds for the first eigenvalue of a spherical cap. Appl. Math. Optim. 10(3), 193–202 (1983)
2. Beurling, A.: Complex analysis. In: Carleson, L., Malliavin, P., Neuberger, J., Wermer, J. (eds.) The Collected Works Arne Beurling, vol. 2, Contemporary Mathematicians. Birkhäuser Boston Inc., Boston, MA (1989)
3. Bonami, A., Clerc, J.-L.: Sommes de Cesaro et multiplicateurs des developpements en harmoniques spheriques. Trans. Am. Math. Soc. 183, 223–263 (1973)
4. Chui, C.K., Zhong, L.: Polynomial interpolation and Marcinkiewicz–Zygmund inequalities on the unit circle. J. Math. Anal. Appl. 233(1), 387–405 (1999)
5. Dai, F., Xu, Y.: Approximation Theory and Harmonic Analysis on Spheres and Balls. Springer Monographs in Mathematics. Springer, New York (2013)