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2. Abbott, D.L., 1971. Physiology of fruit-set in apple. Effect of spring temperature. Annual Report, Long Ashton Research Station, 1970, pp. 30–31
3. Temperature and irrigation effects on the cropping, development and quality of ‘Cox’s Orange Pippin’ and ‘Queen Cox’ apples;Atkinson;Sci. Hort.,1998
4. Adjusting growth stage values to develop a linear scale for apricot flower bud phenology;Austin;Hortscience,1998
5. Production variability in apple crops;Beattie;Sci. Hort.,1977