1. Derksen, H. and Kemper, G.: Computational invariant theory, volume 130 of Encyclopaedia of Mathematical Sciences. Springer, Heidelberg, enlarged edition, 2015. With two appendices by Vladimir L. Popov, and an addendum by Norbert A’Campo and Popov, Invariant Theory and Algebraic Transformation Groups, VIII
2. Draisma, J., Kemper, G., Wehlau, D.: Polarization of separating invariants. Canad. J. Math. 60(3), 556–571 (2008)
3. Ferus, D., Karcher, H., Münzner, Hans Friedrich: Cliffordalgebren und neue isoparametrische Hyperflächen. Math. Z. 177(4), 479–502 (1981)
4. Gorodski, C., Radeschi, Marco: On homogeneous composed Clifford foliations. Münster J. Math. 9(1), 35–50 (2016)
5. Helgason, S.: Groups and geometric analysis, volume 83 of Mathematical Surveys and Monographs. American Mathematical Society, Providence, RI, 2000. Integral geometry, invariant differential operators, and spherical functions, Corrected reprint of the 1984 original