1. Carlson, J., Green, M., Griffiths, P., Harris, J.: Infinitesimal variation of Hodge structure. I. Compos. Math.50, 109?205 (1983)
2. Carlson, J., Griffiths, P.: Infinitesimal variations of Hodge structure and the global Torelli problem. In: Journées de géométrie algébrique d'Angers, pp. 51?76. Alphen an de Rijn: Sijthoff and Nordhoff 1980
3. Catanese, F.: The moduli and global period mapping of surfaces withK 2=p g =1. Compos. Math.41, 401?414 (1980)
4. Chakiris, K.: A Torelli theorem for simply connected elliptic surfaces with a section andp g ?2. Bull. AMS7, 227?232 (1982)
5. Dolgachev, I.: Weighted projective varieties. Group actions and vector fields. Lect. Notes Math. 956, pp. 34?71. Berlin, Heidelberg, New York: Springer 1982