P. Benincasa, R. Pace, G. Tosti, and F. Tei, “Early interspecific interference in the wheat/faba bean (Triticum aestivum/ Vicia faba ssp. minor) and rapeseed/squarrosum clover (Brassica napus var. oleifera/Trifolium squarrosum) intercrops”, Ital J Agronomy, vol. 7, no. 2, p. e24, Apr. 2012.