1. Binary Quadratic Forms;Buell,1989
2. Advanced Number Theory;Cohn,1962
3. Spinor genera of binary quadratic forms;Estes;J. Number Theory,1973
4. Counterexamples to a conjecture concerning class number of binary quadratic forms;Liu;Sci. Magna,2006
5. Supplements to the theory of quartic residues;Sun;Acta Arith.,2001