1. Alderman, D. C., andH. L. Lantz: Apple breeding: Inheritance and statistical studies on the fruits of cross-breeding seedlings with Antonovka parentage. Proc. Amer. Soc. Hort. Sci.36, 279–283 (1939).
2. Baur, Erwin: Einführung in die Vererbungslehre. 7.–11. Aufl. Berlin: Gebr. Bornträger, 1930.
3. Brown, A. Gavin: The order and period of blossoming in apple varieties. J. of Pomol.18, 68–73 (1940).
4. Chittenden, F. L. S.: Pollination in orchards. I.. J. Roy. Hort. Soc.37, II, 350–361 (1911).
5. Crane, M. B., andW. J. C. Lawrence: Fertility and vigour of apples in relation to chromosome number. J. Genet.22, 153–163 (1930).