1. P. Deligne, P. Griffiths, J. Morgan and D. Sullivan: Topology of Kaehler manifolds, Inv. Math., to appear.
2. Homotopy Theory and Differential Forms;Friedlander,1971
3. Rational homotopy theory;Quillen;Ann. Math.,1969
4. Differential forms and the topology of manifolds;Sullivan;Proc. Japan Conference,1972
5. Homotopy de Rham Theory;Sullivan,1973