1. Comrey, A.L., 1973, “A First Course in Factor Analysis,” Academy Press.
2. Cooly, W.W., Lohnes, P.R., 1971, “Multivariate Data Analysis,” Wiley and Sons, New York.
3. Doerffer, R., 1979, “Untersuchungen über die Verteilung oberflächennaher Substanzen im Elbe-Aestuar mit Hilfe von Fernmessverfahren,” Arch. Hydrobiol. Suppl., 43 119–224.
4. Gordon, H.R., 1979, “Diffuse Reflectance of the Ocean: The Theory of its Augmentation by Chlorophyll-a Fluorescence at 685 nm,” Applied Optics, 18 8, 1161–1166.
5. Horwood, 1977, ’Chlorophyll Data of RV “CIROLANA” Cruise 5.5.–9.5. 1976, FLEX Data Centre, Hamburg.