In addition to Igor's answer, there's also:
D. Ornstein and B. Weiss, "The Shannon–McMillan–Breiman theorem for a class of amenable groups", Israel J. Math. 44 (1983), 53–60. Zbl 0516.28020
In addition to Igor's answer, there's also:
D. Ornstein and B. Weiss, "The Shannon–McMillan–Breiman theorem for a class of amenable groups", Israel J. Math. 44 (1983), 53–60. Zbl 0516.28020