TY  - JOUR
AU  - Lubotzky, Alexander
TI  - Lattices of minimal covolume in 𝑆𝐿₂: a non-Archimedean analogue of Siegel’s theorem 𝜇≥𝜋/21
JO  - Journal of the American Mathematical Society
PY  - 1990
SP  - 961
EP  - 975
VL  - 03
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-1990-1070003-7/
DO  - 10.1090/S0894-0347-1990-1070003-7
ID  - 10_1090_S0894_0347_1990_1070003_7
ER  -