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Penny, M.; Willis, C.L.; Gaskin, P.; Lenton, J.R., Preparation of gibberellins A91 and A92 and their occurence in developing wheat grain, Phytochemistry, 1994, 37, 4, 1063-1067, https://doi.org/10.1016/S0031-9422(00)89529-1 . [all data]