1. Reference standards, judges, and comparison subjects: roles for experts in evaluating system performance;Hripcsak;J Am Med Inform Assoc,2002
2. The next-generation emergency department;Smith;Ann Emerg Med,1998
3. T-SystemEV version 2.2 ED Information System—http://www.tsystem.com/.
4. CodoniX ED Systems—http://www.codonix.com/;
5. Ibex Health Data Systems—http://www.ibexhealthdata.com/ Meditech Emergency Department Management—http://www.meditech.com/productbriefs/pages/ProductBriefsCSEDM.htm;