1. The Standard Cyclopedia of Horticulture;Bailey,1958
2. KonservárenskéSuroviny;Blattný,1986
3. Dictionary of Gardening: the Royal Horticultural Society;Chittenden,1956
4. Laying down quality standards for carrots, citrus fruit and dessert apples and pears and amending Commission Regulation no. 58;Official Journal of the European Communities no. I.97/19.,1989
5. Asian Pear – Postharvest Quality Maintenance Guidelines;Crisosto,2002