Toward Improved Coefficients for Predicting Direct N2O Emissions from Soil in Canadian Agroecosystems - B. L. Helgason; H. H. Janzen; M. H. Chantigny; C. F. Drury; B. H. Ellert; E. G. Gregorich; R. L. Lemke; E. Pattey; P. Rochette; C. Wagner-Riddle (Nutrient Cycling in Agroecosystems, 2005)