The Addition Theorem for Spherical Harmonics and Monopole Harmonics

Fung, M. K. (2000). Spherical Harmonics and Monopole Harmonics. Chinese Journal of Physics, 38(4), 773-782. https://www.airitilibrary.com/Article/Detail?DocID=05779073-200008-201210230016-201210230016-773-782
陳志立、謝宗軒、翁國祐（2007）。The Derivations of the Four-Part Formulae and Its Inference in Spherical Trigonometry。航運季刊，16(2)，67-84。https://www.airitilibrary.com/Article/Detail?DocID=18124313-200706-200911200043-200911200043-67-84
Liu, C. L. (2012). Discrete Orthogonal Harmonic Transforms [master's thesis, National Taiwan University]. Airiti Library. https://doi.org/10.6342/NTU.2012.01069
PEETRE, J., & ZHANG, G. (1993). HARMONIC ANALYSIS ON THE QUANTIZED RIEMANN SPHERE. International Journal of Mathematics and Mathematical Sciences, 1993(), 225-243. https://doi.org/10.1155/S0161171293000274
Ng, S. M. (1979). Some theorems in approximation theory [master's thesis, The University of Hong Kong]. Airiti Library. https://www.airitilibrary.com/Article/Detail?DocID=U0029-1812201200005404