2.
Castagna R., Minoia C., Porfiri O., Rocchetti G.: Nitrogen level and seeding rate effects on the performance of hulled wheats H. Sulewska, W. Koziara, G. Szymańska, K. Panasiewicz, J. Piekarczyk „Journal of Research and Applications in Agricultural Engineering” 2010, Vol. 55(4) 130 Triticum monococcum L., T. dicoccum Schübler and T. spelta L. evaluated in contrasting agronomic environments. J. Agron. Crop Sci. 176, 173-181, 1996.