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Hedden, P.; Hoad, G.V.; Gaskin, P.; Lewis, M.J.; Green, J.R.; Furber, M.; Mander, L.N., Kaurenoids and gibberellins, including the newly characterized gibberellin A88, in developing apple seeds, Phytochemistry, 1993, 32, 2, 231-237, https://doi.org/10.1016/S0031-9422(00)94973-2 . [all data]