@article{AIHPB_2003__39_4_621_0,
     author = {Blach\`ere, S\'ebastien},
     title = {Cut times for random walks on the discrete {Heisenberg} group},
     journal = {Annales de l'I.H.P. Probabilit\'es et statistiques},
     pages = {621--638},
     publisher = {Elsevier},
     volume = {39},
     number = {4},
     year = {2003},
     doi = {10.1016/S0246-0203(03)00017-7},
     mrnumber = {1983173},
     zbl = {1022.60004},
     language = {en},
     url = {http://archive.numdam.org/articles/10.1016/S0246-0203(03)00017-7/}
}