J. G. Kiernan, American Journal of Insanity, July, 1877.
Maudsley dealt, in his vigorous, picturesque manner, with the more extreme morbid mental conditions sometimes found associated with masturbation, in "Illustrations of a Variety of Insanity," Journal of Mental Science, July, 1868.
See, e.g., Löwenfeld, Sexualleben und Nervenleiden, 2d. ed., Ch. VIII.