Developing Applications with CORAL. - Amitabh Saran; Keith K. Park; Yongmao Chen; Ana Paula de Aguiar; Terence R. Smith; Jianwen Su (Workshop on Programming with Logic Databases (Informal Proceedings), ILPS, 1993)

Finitely Representables Spatial Objects and Efficient Computation. - Yongmao Chen; Terence R. Smith (ISAAC, 1994)