TY  - JOUR
AU  - Umberto Zannier
TI  - Parametrizing ${\rm SL}_2({\Bbb Z})$ and a question of Skolem
JO  - Acta Arithmetica
PY  - 2003
SP  - 331
EP  - 337
VL  - 110
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/aa110-4-2/
DO  - 10.4064/aa110-4-2
LA  - en
ID  - 10_4064_aa110_4_2
ER  -