1. Wu J, Zhang S, Ming R, Zhu S, Khan MA, Tao S, Korban SS, Wang H, Chen NJ, Nishio T, Xu X, Cong L, Qi K, Huang X, Wang Y, Zhao X, Wu J, Deng C, Gou C, Zhou W, Yin H, Qin G, Sha Y, Tao Y, Chen H, Yang Y, Song Y, Zhan D, Wang J, Li L, Dai M, Gu C, Wang Y, Shi D, Wang X, Zhang H, Zeng L, Zheng D, Wang C, Chen M, Wang G, Xie L, Sovero V, Sha S, Huang W, Zhang S, Zhang M, Sun J, Xu L, Li Y, Liu X, Li Q, Shen J, Wang J, Paull RE, Bennetzen JL, Wang J, Zhang S (2013) The genome of the pear (Pyrus bretschneideri Rehd.). Genome Res 23(2):396–408
2. Morettini A, Baldini E, Scaramuzzi F, Mittempergher L (1967) Monografia delle principali cultivar di pero. Centro miglioramento piante da frutto e da orto CNR, Firenze
3. Moore JN, Ballington JR Jr (1991) Genetic resources of temperate fruit and nut crops (No. 290). International Society for Horticultural Science
4. WAPA (World Apple and Pear Association) Apple and Pear Production by country and year (cit. 2003–2012)
5. Hancock JF, Lobos GA (2008) In: Hancock JF (ed) Temperate Fruit crop breeding. Springer, The Netherlands