1. Arbarello, E.-Cornalba, M.-Griffiths, P.-Harris,J. [1980]: Topics in the theory of algebraic curves, to appear in the Princeton Math. Series.
2. Graduate Texts in Math.;V. Arnold,1978
3. Colley, S. [1983]: On the enumerative geometry of stationary multiplepoints, thesis, Mass. Institute of Tech., Cambridge, Mass. (1983).
4. Coolidge, J. [1959]: A treatise on algebraic plane curves, Dover, New York (1959).
5. Cremona, L. [1862]: Introduzione ad una teoria geometrica delle curve piane, Bologna (1862) = Einleitung in einer Theorie der ebenen Curven, translated by M. Curtze, Greisswald (1865).