Citation: | ZHU Lin, YAO Qiang. An Elementary Proof for the Recurrence of the Product Graph \mathbb{Z}^2\times\{0,1,\ldots,l-1\}[J]. Chinese Journal of Applied Probability and Statistics, 2018, 34(3): 275-283. DOI: 10.3969/j.issn.1001-4268.2018.03.005 |