@article{TRSPY_1961_64_a18,
     author = {I. R. Shafarevich},
     title = {Principal homogeneous spaces defined over a~function field},
     journal = {Informatics and Automation},
     pages = {316--346},
     publisher = {mathdoc},
     volume = {64},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1961_64_a18/}
}