@article{TRSPY_1990_183_a23,
     author = {I. R. Shafarevich},
     title = {The {L\"uroth} problem},
     journal = {Informatics and Automation},
     pages = {199--204},
     publisher = {mathdoc},
     volume = {183},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1990_183_a23/}
}