System Specification in Rosetta. - Perry Alexander; Roshan Kamath; David Barton (ECBS, 2000)

On the Design of ORBIT. - Murali Rangarajan; Iqbal Mutabanna; Darryl D. Dieckman; Badar Farooqi; Amitvikram Rajkhowa; Sarjoun Doumit; Arun Venkataraman; Cindy Kong; Roshan Kamath; Perry Alexander; Nael B. Abu-Ghazaleh (ECBS, 2000)

Orthogonal Relations for Reasoning about Abstract Events. - Ajay D. Kshemkalyani; Roshan Kamath (ECSQARU, 2001)

Orthogonal relations for reasoning about posets. - Ajay D. Kshemkalyani; Roshan Kamath (Int. J. Intell. Syst., 2002)