@Article{cp-5-297-2009,
AUTHOR = {Prentice, I. C. and Harrison, S. P.},
TITLE = {Ecosystem effects of CO$_{2}$ concentration: evidence from past climates},
JOURNAL = {Climate of the Past},
VOLUME = {5},
YEAR = {2009},
NUMBER = {3},
PAGES = {297--307},
URL = {http://www.clim-past.net/5/297/2009/},
ISSN = {1814-9324}
}