@article{ZNSL_1995_231_a5,
     author = {D. N. Georgiou and S. D. Iliadis},
     title = {Universal elements for families of separable metrizable spaces},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {88--134},
     publisher = {mathdoc},
     volume = {231},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1995_231_a5/}
}