References |
Ref.1 : S. Hertzberg, S. Liaaen-Jensen, and H. W. Siegelman, Phytochemistry, 1971, Vol. 10, pp. 3121 - 3127 "The carotenois of blue-green algae" Ref.610 : The Biochemistry of the Carotenoids: Volume I Plants, p.237, Springer, ISBN-10: 9400958625, ISBN-13: 978-9400958623
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