@article{MZM_1975_18_5_a7,
     author = {G. T. Konovalov},
     title = {Triviality of universal norms on formal groups over a~local field},
     journal = {Matemati\v{c}eskie zametki},
     pages = {711--717},
     publisher = {mathdoc},
     volume = {18},
     number = {5},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1975_18_5_a7/}
}