Wörmer, L, Cirés, S, Velázquez, D, Quesada, A and Hinrichs, KU (2012) Cyanobacterial heterocyst glycolipids in cultures and environmental samples: Diversity and biomarker potential. Limnology and Oceanography, 57(6). 1775-1788. doi:10.4319/lo.2012.57.6.1775