TY - JOUR AU - Tekcan, Ahmet AU - Bizim, Osman TI - The connection between quadratic forms and the extended modular group JO - Mathematica Bohemica PY - 2003 SP - 225 EP - 236 VL - 128 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/MB.2003.134178/ DO - 10.21136/MB.2003.134178 LA - en ID - 10_21136_MB_2003_134178 ER -