@article{ZNSL_1990_185_a0,
     author = {U. A. Akramov},
     title = {An isolated theorem for forms of purely real algebraic fields},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {5--12},
     publisher = {mathdoc},
     volume = {185},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1990_185_a0/}
}