@article{ZNSL_2001_276_a8,
     author = {V. G. Zhuravlev and A. A. Yudin},
     title = {Random walks on plane crystallographic groups},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {204--218},
     publisher = {mathdoc},
     volume = {276},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2001_276_a8/}
}