1. Algebraic K-theory;Bass,1968
2. E. Davis and P. Marcoscia, Affine curves on which every point is a set-theoretic complete intersection, preprint.
3. A note on principal ideals and smooth curves;Fried;J. Algebra,1982
4. Principal ideals and smooth curves;Geramita;J. Algebra,1980
5. Division points on curves;Lang;Ann. Mat. Pura Apl.,1965