Kamala Krithivasan Meena Mahajan Nondeterministic, Probabilistic and Alternating Computations on Cellular Array Models. 23-49 1995 143 Theor. Comput. Sci. 1 db/journals/tcs/tcs143.html#KrithivasanM95 http://dx.doi.org/10.1016/0304-3975(95)80023-3