Peters, K., Peters, E.-M., von Haugwitz, T., & Tochtermann, W. (1999). Crystal structure of (4R*,5R*)-methyl 3,6-hexanooxepino[4,5-d]-2- pyrazoline-5-carboxylate, C6H12[C7H5N2O]COOCH3. Zeitschrift für Kristallographie - New Crystal Structures, 214, 95-96.