Douma, J. C, M. T van Wijk, and Gaius R Shaver. ?The Contribution Of Mosses To The Carbon And Water Exchange Of Arctic Ecosystems: Quantification And Relationship With System Properties?. Plant, Cell And Environment 30. Plant, Cell And Environment (2007): 1205-1215. doi:10.1111/j.1365-3040.2007.01697.x.