@article{GDZPPN002228270,
title = {An Extension of Calabi's Rigidity theorem to complex submanifolds of indefinite complex space forms.},
journal = {Manuscripta mathematica},
volume = {58},
year = {1987},
pages = {261-276},
zbl = {0617.53055},
url = {http://dml.mathdoc.fr/item/GDZPPN002228270}
}
Romero, Alfonso. An Extension of Calabi's Rigidity theorem to complex submanifolds of indefinite complex space forms.. Manuscripta mathematica, Tome 58 (1987) pp. 261-276. http://gdmltest.u-ga.fr/item/GDZPPN002228270/