J. Petersen, R. Teich, H. Brinkmann, R. Cerff A “Green” Phosphoribulokinase in Complex Algae with Red Plastids: Evidence for a Single Secondary Endosymbiosis Leading to Haptophytes, Cryptophytes, Heterokonts, and Dinoflagellates Journal of Molecular Evolution, Vol: 62, Issue: 2, 2006, ss. 143-157, ISSN0022-2844