1. Topics in the Theory of Riemann Surfaces;Accola,1994
2. Geometry of Algebra Curves, I;Arbarello,1985
3. E. Ballico, C. Keem, Weierstrass multiple points on algebraic curves and ramified coverings, Israel. J. Math.
4. The primitive length of a generalk;Coppens;Indag. Math. (N.S.),1994
5. Secant spaces and Clifford's theorem;Coppens;Composition Math.,1991