1. Freud S. , Introductory Lectures on Psycho-analysis, pp. 268 et seq.
2. Ewen , Handbook of Psychiatry, p. 58.
3. Coleman Stanley M. , “Mis-identification and Non-recognition” Journ. Ment. Sci., January, 1933.
4. Capgras J. , et Reboul-Lachaux , “Illusion des Sosies dans un delire systematise chronique”, Bull. Soc. Clin, de Méd. Ment., January, 1923.