@article{IM2_2020_84_2_a7,
     author = {G. V. Fedorov},
     title = {On $S$-units for valuations of the second degree in hyperelliptic fields},
     journal = {Izvestiya. Mathematics },
     pages = {392--435},
     publisher = {mathdoc},
     volume = {84},
     number = {2},
     year = {2020},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2020_84_2_a7/}
}