van Loon, Adolphus P.G.M., Hans-Peter Hohmann, Werner Bretzel, Markus Hümbelin, and Magdalena Pfister. “Development of a Fermentation Process for the Manufacture of Riboflavin”. CHIMIA 50, no. 9 (September 25, 1996): 410. Accessed April 27, 2024. https://www.chimia.ch/chimia/article/view/1996_410.