References
- English JT, Sharfstein SS, Scherl DJ, Astrachan B, Muszynski IL. Diagnosis-related groups and general hospital psychiatry: the APA study. American Journal of Psychiatry 1986; 143: 131–139
- Commonwealth Dept of Human Services and Health. DRG Development Casemix Branch. December, 1994, Report on the development of the third version of the AN-DRG Classification