Singularities with exact Poincaré complex but not quasihomogeneous.
Gerhard Pfister, Hans Schönemann (1989)
Revista Matemática de la Universidad Complutense de Madrid
Similarity:
We give examples of complete intersections in C3 with exact Poincaré complex but not quasihomogeneous using the classification of C.T.C. and the algorithm of Mora.