Power sum decompositions of defining equations of reflection arrangements Feb 6, 2024 Zach Teitler and Alexander Woo. Power sum decompositions of defining equations of reflection arrangements. J. Alg. Comb. 41 (2015), no. 2, 365-383 arXiv: https://arxiv.org/abs/1304.7202 doi: 10.1007/s10801-014-0539-0