TY  - JOUR
AU  - Massimiliano Pontecorvo
TI  - Algebraic dimension of twistor spaces and scalar curvature of anti-self-dual metrics.
JO  - Mathematische Annalen
PY  - 1991
SP  - 113
EP  - 122
VL  - 291
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MAN_1991__291_1_164853/
ID  - MAN_1991__291_1_164853
ER  -