%0 Conference Proceedings %F infinity10 %A Bertrand, N. %A Morvan, C. %T Probabilistic Regular Graphs %B Infinity %V 39 %P 77-90 %S EPTCS %C Singapore %X Deterministic graph grammars generate regular graphs, that form a structural extension of configuration graphs of pushdown systems. In this paper, we study a probabilistic extension of regular graphs obtained by labelling the terminal arcs of the graph grammars by probabilities. Stochastic properties of these graphs are expressed using PCTL, a probabilistic extension of computation tree logic. We present here an algorithm to perform approximate verification of PCTL formulae. Moreover, we prove that the exact model-checking problem for PCTL on probabilistic regular graphs is undecidable, unless restricting to qualitative properties. Our results generalise those of [8], on probabilistic pushdown automata, using similar methods combined with graph grammars techniques %U http://www.irisa.fr/vertecs/Publis/Ps/2010-infinity.pdf %U http://dx.doi.org/10.4204/EPTCS.39.6 %8 September %D 2010