A Generalization of ACP Using Belnap's Logic.

Alban Ponse Mark van der Zwaag A Generalization of ACP Using Belnap's Logic. 287-293 2006 162 Electr. Notes Theor. Comput. Sci. http://dx.doi.org/10.1016/j.entcs.2005.12.102 db/journals/entcs/entcs162.html#PonseZ06