1. Adey, W. R., Dunlop, C. W., Hendrix, C. E.: Hippocampal slow waves. Arch. Neurol. clin. 3, 96?112 (1960).
2. Bovet, D.: Action of nicotine on conditioned behavior in naive and pretrained rats. In tobacco alkaloids and related compounds. Oxford: Pergamon Press 1965.
3. ?, Bovet-Nitti, F., Oliverio, A.: Action of nicotine on spontaneous and acquired behavior in rats and mice. Ann. N. Y. Acad. Sci. 142, 261?267 (1967).
4. Bovett-Nitti, F.: Action of nicotine on conditioned behavior in naive and pretrained rats. II. Complex forms of acquired behaviour-discussion. In tobacco alkaloids and related compounds. Oxford: Pergamon Press 1965.
5. ?: Facilitation of simultaneous visual discrimination by nicotine in the rat. Psychopharmacologia (Berl.) 10, 59?66 (1966).