1. The ontogeny of nocturnal penile tumescence;Karacan;Waking and Sleeping,1976
2. Clinical value of nocturnal erection in the prognosis and diagnosis of impotence;Karacan;Med. Asp. Hum. Sex.,1970
3. Nocturnal penile tumescence: an objective diagnostic aid for erectile dysfunction;Karacan,1982
4. Evaluation of nocturnal penile tumescence and impotence;Karacan,1982
5. Adrenoceptor drugs and sleep;Betts,1981