Piccinnileopardi, C., Germain, G., Declercq, J.-P., Vanmeerssche, M., Robert, JB., & Jurkschat, K. (1982). An 8-membered Ring Containing 2 Phosphorus Atoms - Trans Isomer of 2,6-dimethyl-1,3-dioxa-2,6-diphosphacyclooctane 2,6-disulfide. Acta Crystallographica. Section B: Structural Science, 38(AUG), 2197-2199. https://doi.org/10.1107/S0567740882008310 (Original work published 1982)