A. C.  Risch, Schütz, M., Jurgensen, M. F., Dornisch, T., Ohashi, M., and Finér, L., ?CO2 emissions from red wood ant (Formica rufa group) mounds: Seasonal and diurnal patterns related to air temperature.?, Annales Zoologici Fennici, vol. 42, pp. 283-290, 2005.