An analysis of the effect of parallelism in the control of dynamical systems. - Selim G. Akl; Brendan J. Cordy; Weiguang Yao (Parallel Algorithms Appl., 2005)

Regular Approximations of Non-Regular Languages. - Brendan J. Cordy; Kai Salomaa (DCFS, 2006)

On the existence of regular approximations. - Brendan J. Cordy; Kai Salomaa (Theor. Comput. Sci., 2007)