1. Arbarello, E., Cornalba, M., Griffiths, P.A., Harris, J.: Geometry of Algebraic Curves. Springer, New York/Berlin/Heidelberg/Tokyo (1984)
2. Lecture Notes in Mathematics;A. Altman,1970
3. Ballico, E.: The rank of the multiplication map for sections of bundles on curves. Boll. U.M.I. 4-B(8), 677–683 (2001)
4. Bayer, D., Eisenbud, D.: Graph curves. Adv. Math. 86, 1–40 (1991)
5. Progr. Math.;F. Catanese,1982