1. Some contingencies of the moral evaluation and control of clientele: The case of the hospital emergency service;Roth;Am. J. Sociol.,1971
2. Queuing and Waiting: Studies in the Organization of Access and Delay;Schwartz,1975
3. Social class and medical care; Indices of nonurgency in use of hospital emergency services;Levanhar;Med. Care,1968
4. Nonurgent patient on the emergency floor;Kirkpatrick;Med. Care,1967
5. Utilization of Emergency Service Units of Large Urban Public Hospitals;Newport,1971