1. Bernier, G.: The morphogenic role of the apical meristem in higher plants In: Les phytohormones et l'organogenèse. Cong. Internat. Univ. of Liège, p. 151?211 (1966).
2. Brown, J. A. M.: Effect of thymidine analogues on reproductive morphogenesis in Arabidopsis thaliana (L.) Heynh. Nature (Lond.) 196, 51?53 (1962).
3. Chailakyan M. K.: Internal factors of plant flowering. Ann. Rev. Plant Physiol. 19, 1?36 (1968).
4. Feierabend, J. von, u. R. Bünsow: Fordernder Einfluß von Chloramphenicol auf die Vernalisation von Winterroggen Flora 158, 153?156 (1967).
5. Goldschmidt, E. E.: Shoot growth regulation by endogenous hormonal systems in Citrus trees. Doct. dissert. Hebrew Univ. Jerusalem 1968.