@article{SM_1994_77_2_a13,
     author = {P. A. Zalesskii},
     title = {The structure of the~congruence kernel for~$\mathrm{SL}_2$ in the~case of a~global field of positive characteristic},
     journal = {Sbornik. Mathematics},
     pages = {489--495},
     publisher = {mathdoc},
     volume = {77},
     number = {2},
     year = {1994},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1994_77_2_a13/}
}