@article{GDZPPN00243296X,
title = {Extremal Maps of a Hilbert Space Equipped with a Natural Cone.},
journal = {Mathematische Zeitschrift},
volume = {194},
year = {1987},
pages = {95-98},
zbl = {0589.47048},
url = {http://dml.mathdoc.fr/item/GDZPPN00243296X}
}
Dang, Trien Bang. Extremal Maps of a Hilbert Space Equipped with a Natural Cone.. Mathematische Zeitschrift, Tome 194 (1987) pp. 95-98. http://gdmltest.u-ga.fr/item/GDZPPN00243296X/