1. Some elementary examples of unirational varieties which are not rational;Artin,1972
2. Algebraic Graph Theory;Biggs,1974
3. On the Brauer group of surfaces;DeMeyer;J. Algebra,1984
4. On the Brauer group of k[x1, …, xn, 1/tf];Ford;J. Algebra,1989
5. Algebraic Curves;Fulton,1969