TY  - JOUR
AU  - Umberto Zannier
TI  - Remarks on a question of Skolem about the integer solutions of x₁x₂ - x₃x₄ = 1
JO  - Acta Arithmetica
PY  - 1996
SP  - 153
EP  - 164
VL  - 78
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/aa-78-2-153-164/
DO  - 10.4064/aa-78-2-153-164
LA  - en
ID  - 10_4064_aa_78_2_153_164
ER  -