Tzschach, A., Jurkschat, K., Zschunke, A., Mugge, C., Altenbrunn, B., Piccinnileopardi, C., Germain, G., Declercq, J.-P., & Vanmeerssche, M. (1985). 1,3,2,5-dioxadiphosphorinanes - 6-membered Ring Compounds Containing 2 Different Phosphorus Atoms. Journal of Crystallographic and Spectroscopic Research, 15(5), 423-431. https://doi.org/10.1007/BF01171046 (Original work published 1985)