● Burger-Wiersma T,Stal LJ,Mur LR (1989). Prochlorthrix hollandica gen. nov. sp. nov., a Filamentous Oxygenic Photoautotrophic Procaryote Containing Chlorophylls a and b: Assignment to Prochlorotrichaceae fam. nov. and Order Prochlorales Florenzano, Balloni, and Materassi 1986, with Emendation of the Ordinal Description. Int. J. Syst. Bacteriol. 39, 250-257.