Dejehet, F., Debuyst, R., Spirlet, M., Declercq, J.-P., & Vanmeerssche, M. (1983). [Crystallographic, Electron-spin Resonance and Optical Study of the (15-crown-5 Ether) Diaquo Dichloro Methano Copper (ii) Complex]. Journal de Chimie Physique, 80(11-1), 819-825. https://hdl.handle.net/2078.5/143100 (Original work published 1983)