References |
Ref.118 : Andrewes, A. G.; Kjoesen, H.; Liaaen-Jensen, S.; Weisgraber, K. H.; Lousberg, R. J. J. C.; Weiss, U., Acta Chemica Scandinavica (1947-1973) (1971), 25(10), 3878-80., "Animal carotenoids. 7. Carotenes of two color variants of the aphid Macrosiphum liriodendri. Identification of natural γ,γ-carotene"
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