Molyboga, V.M. and Mikhailets, V.A. (2013) “Remarks on Schrödinger operators with singular matrix potentials”, Methods of Functional Analysis and Topology, 19(2), pp. 161–167. Available at: https://zen.imath.kiev.ua/index.php/mfat/article/view/543 (Accessed: 18 December 2025).