M. Chapman "Symmetries of Spherical Harmonics: Applications to Ambisonics"https://iaem.at/ambisonics/symposium2009/proceedings/ambisym09-chapman-shsymmetries.pdf/viewhttps://iaem.at/@@site-logo/iaem-logo.png
M. Chapman "Symmetries of Spherical Harmonics: Applications to Ambisonics"