1988 · Allan S. Felsot, Rex A. Liebl, et al. · Illinois Digital Environment for Access to Learning and Scholarship (University of Illinois at Urbana-Champaign) · 5
1990 · Dennis P. McKenna, Thomas J. Bicki, et al. · Illinois Digital Environment for Access to Learning and Scholarship (University of Illinois at Urbana-Champaign) · 1