Citation: Chisholm, M. H.; Galucci, J.; Krempner, C.; Wiggenhorn, C. (2006). Comments on the ring-opening polymerization of morpholine-2,5-dione derivatives by various metal catalysts and characterization of the products formed in the reactions involving R2SnX2, where X = OPr(i) and NMe2 and R = Bu(n), Ph and p-Me2NC6H4.. Dalton transactions (Cambridge, England : 2003), , pp. 846-851.