GRIGORAS, M. A.; POPESCU, A.; PAMFIL, D.; HAS, I.; GIDEA, M. Conservation Agriculture versus Conventional Agriculture: The Influence of Agriculture System, Fertilization and Plant Protection on Wheat Yield. Notulae Botanicae Horti Agrobotanici Cluj-Napoca, v. 40, n. 1, p. 188-194, 14 May 2012.