@article{GDZPPN002330792,
title = {Extrinsic Upper Bounds for ...1.},
journal = {Mathematische Annalen},
volume = {280},
year = {1988},
pages = {389-402},
zbl = {0628.53044},
url = {http://dml.mathdoc.fr/item/GDZPPN002330792}
}
Heintze, Ernst. Extrinsic Upper Bounds for ...1.. Mathematische Annalen, Tome 280 (1988) pp. 389-402. http://gdmltest.u-ga.fr/item/GDZPPN002330792/