@article{SEMR_2021_18_1_a4,
     author = {A. A. Korobov and O. A. Korobov},
     title = {On the discriminant of a quadratic field with intermediate fractions of negative norm and the decomposability of its representing polynomial},
     journal = {Sibirskie \`elektronnye matemati\v{c}eskie izvesti\^a},
     pages = {319--331},
     publisher = {mathdoc},
     volume = {18},
     number = {1},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SEMR_2021_18_1_a4/}
}