M Bret-Harte, Syndonia, Michelle C Mack, Gregory R Goldsmith, D. B Sloan, Jennie  DeMarco, Gaius R Shaver, P. M Ray, Z.  Biesinger, and F Stuart Chapin III. ?Plant Functional Types Do Not Predict Biomass Responses To Removal And Fertilization In Alaskan Tussock Tundra?. Journal Of Ecology 96, no. 4. Journal Of Ecology (2008): 713-726. doi:10.1111/j.1365-2745.2008.01378.x.

Biesinger, Z., Edward B Rastetter, and Bonnie L Kwiatkowski. ?Hourly And Daily Models Of Active Layer Evolution In Arctic Soils?. Ecological Modelling 206, no. 1-2. Ecological Modelling (2007): 131-146. doi:10.1016/j.ecolmodel.2007.03.030.