@article{ZNSL_2002_292_a4,
     author = {Yu. A. Neretin},
     title = {Spreading maps (polymorphisms), symmetries of {Poisson} processes, and matching summation},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {62--91},
     year = {2002},
     volume = {292},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2002_292_a4/}
}