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.510 : G. W. Francis, and L. N. Halfen, Phytochemistry1, 1972, Vol. 11, pp. 2347 to 2348. Pergamon Press., "Cyanophyta Oscillatoriaceae, gamma-carotene and lycopene Oscillatoria princeps"
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