1. Factors affecting hedgerow peach orchard establishment;Allison;J. Amer. Soc. Hort. Sci.,1987
2. 2001 www.fas.usda.gov/htp/highlights/2001/IATR/canftr.pdf
3. La potatura dei fruttiferi;Baldassari;Proc. II Convegno Provinciale Frutticolo, Ferrara, 16 January,1950