1. Effect of early summer weather on the yield of Lane's Prince Albert apple;Barlow,1975
2. Production variability in apple crops. II. The long-term behaviour of the English crop;Beattie;Scientia Hortic.,1978
3. GINOGRAF and GINOF manuals;Computer Aided Design Centre,1976
4. The causes of year-to-year variation in the average yield of Cox's Orange Pippin apple in England;Jackson;J. Hortic. Sci.,1980
5. NAG Fortran Library Manual,1978