1. Emergency Medical Services in the Chicago Area;Gibson,1970
2. Variations in the delivery of ambulatory services by urban hospitals;Gibson,1970
3. Status of urban emergency services;Gibson;Hospitals,1971
4. Gibson, Geoffrey. Communication systems and hospital emergency facilities. Hospitals (in press).
5. Frey, Charles F., Huelke, D.F. and Gikas, P.W. Resuscitation and survival in motor vehicle accidents. J. Trauma. 9, 292–310.