Mark S. Silver Steven L. Alter Joyce J. Elam Charles B. Stabell Dov Te'eni Decision Support Systems: Balancing Directed and Nondirected Change. 51-56 1992 conf/ifip8-3/1992 Decision Support Systems: Experiences and Expectations db/conf/ifip8-3/ifip8-3-1992.html#SilverAEST92