@article{ZNSL_1979_86_a6,
     author = {V. E. Voskresenskii},
     title = {Problems in $R$-equivalence of semisimple groups},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {49--65},
     publisher = {mathdoc},
     volume = {86},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1979_86_a6/}
}