Pavle Blagojević, Vladimir Grujić, Rade Živaljević, “Arrangements of symmetric products of spaces”, Topology and its Applications, 148, no. 1-3, 2005, 213
E. A. Nikonova, “On Maxwell’s Representation of MacCullagh’s Formula: A Way to Determine the Principal Axes of Inertia for a Rigid Body via its Multipole of the Second Order”, Comput. Math. and Math. Phys., 64, no. 11, 2024, 2716