Morgan-Kiss RM, Priscu JC, Pocock T, Gudynaite-Savitch L, Huner NPA. Adaptation and acclimation of photosynthetic microorganisms to permanently cold environments. Microbial and Molecular Biology Review. 2006;70(1):222-252. doi:10.1128/?MMBR.70.1.222-252.2006.