. Alfonso Gerevini and Bernhard Nebel. Qualitative spatio-temporal reasoning with rcc-8 and alien's interval calculus: Computational complexity. In Frank van Harmelen, editor, ECAI, pages 312-316. IOS Press, 2002. Goe94. Ben Coertzel. Chaotic Logic. Plenum, 1994. Coe06. Ben Coertzel. The Hidden Pattern. Brown