@article{ISU_2016_16_1_a6,
     author = {I. S. Yurchenko},
     title = {On the existence of continual closed $U$-set},
     journal = {Izvestiya of Saratov University. Mathematics. Mechanics. Informatics},
     pages = {76--79},
     publisher = {mathdoc},
     volume = {16},
     number = {1},
     year = {2016},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ISU_2016_16_1_a6/}
}