Mohamed Tawfik, Spanish University for Distance Education (UNED); Elio Sancristobal, Spanish University for Distance Education (UNED); Sergio Martin, Spanish University for Distance Education (UNED); Rosario Gil, Spanish University for Distance Education (UNED); Alberto Pesquera Martín, Spanish University for Distance Education (UNED); Tovar Edmundo, Universidad Politécnica de Madrid; Martin Llamas-Nistal, University of Vigo; Gabriel Diaz Orueta, Spanish University for Distance Education (UNED); Juan Peire; Manuel Castro, Spanish University for Distance Education (UNED)
Chuan Yue, University of Colorado, Colorado Springs; Weiying Zhu, Metropolitan State College of Denver; Gregory Lynn Williams, University of Colorado, Colorado Springs; Edward Chow, University of Colorado, Colorado Springs
Dale N. Buechler, University of Wisconsin, Platteville; Phil J Sealy Jr., University of Wisconsin, Platteville; John R Goomey, University of Wisconsin, Platteville