[2] S. G. Dani, G. A. Margulis, V:
alues of quadratic forms at integral points: an elementary approach. Enseign. Math. (2) 36 (1990), 143-174.
MR 1071418
[6] T. H. Jackson:
Small positive values of indefinite ternary forms. Mathematika - to appear.
MR 2059053 |
Zbl 1051.11033
[10] B. Segre:
Lattice points in infinite domains and asymmetric Diophantine approximations. Duke Math. J. 12 (1945), 337-365.
MR 0012096 |
Zbl 0060.11807