@article{ZNSL_2015_441_a7,
     author = {A. M. Vershik and U. Hab\"ock},
     title = {On the classification problem of measurable functions in several variables and on matrix distributions},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {119--143},
     year = {2015},
     volume = {441},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2015_441_a7/}
}