A general biogeochemical model describing the responses of the C and N cycles in terrestrial ecosystems to changes in CO2, climate, and N deposition. - Rastetter, ,E..B.,.; Ryan, ,M..G.,.; Shaver, ,G..R.,.; Melillo, ,J..M.,.; Nadelhoffer, ,K..J.,.; Hobbie, ,J..E.,.; and Aber, ,J..D.. (Tree Physiol., 1991)