An Integrated Estimation and Modeling Environment for the Design of the Orbital Space Plane. - Dayana Cope; Mansooreh Mollaghasemi; Assem Kaylani; Alex J. Ruiz-Torres; Martin J. Steele; Marcella L. Cowen (WSC, 2004)

Knowledge based representation and operations assessment of space transportation system architectures. - Alex J. Ruiz-Torres; Edgar Zapata; Kazuo Nakatani; Marcella L. Cowen (Knowl. Based Syst., 2006)