@article{ZNSL_2016_448_a8,
     author = {J. E. Isomurodov and K. P. Kokhas},
     title = {A set of~$12$ numbers is not determined by its set of $4$-sums},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {135--142},
     publisher = {mathdoc},
     volume = {448},
     year = {2016},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2016_448_a8/}
}