1. R. Griesinger,Die Pathologie und Therapie der psychischen Krankheiten (Wreden, Braunschweig 1845).
2. J. W. L. Thudichum,A Treatise on the Chemical Constitution of the Brain (Balliere, Tindall and Cox, London 1884).
3. V. M. Buscaino, Riv. pat. nerv. ment.27, 178 (1922).
4. F. Georgi, Arch. Psychiat.71, 55 (1924).
5. K. Beringer,Der Mezcalinrausch (Springer, Berlin 1927).