@article{10_4064_cm_72_1_173_193,
     author = {Laurent Bartholdi and Serge Cantat and Tullio Ceccherini-Silberstein and Pierre de la Harpe},
     title = {Estimates for simple random walks on fundamental groups of surfaces},
     journal = {Colloquium Mathematicum},
     pages = {173--193},
     publisher = {mathdoc},
     volume = {72},
     number = {1},
     year = {1997},
     doi = {10.4064/cm-72-1-173-193},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-72-1-173-193/}
}