Y.-H. Yang, X.-Y. Zhang, M.-M. Zhao, G. Li, and X.-Y. Dong, “Synthesis and Crystal Structure of 5-Methoxy-4’-chloro-2,2’-[ethylenedioxybis(nitrilomethylidyne)]diphenol”, ajc, vol. 26, no. 4, pp. 1133–1135, Feb. 2014.