Wernand, M.R., and W. Gieskes (2011). Ocean Optics from 1600 (Hudson) to 1930 (Raman), shifting interpretation of natural water colouring. Union des Océanographes de France, Paris, ISBN: 978-2-9510625-3-5.
Wernand, M.R., and W. Gieskes (2011)2018-04-172018-04-17https://ioccg.org/wp-content/uploads/2016/05/logo-ioccg-website.pngIOCCGhttps://ioccg.org/wp-content/uploads/2016/05/logo-ioccg-website.png200px200px