@article{GDZPPN002301431,
title = {Optimization Theory in Linear Spaces. I.},
journal = {Mathematische Annalen},
volume = {180},
year = {1969},
pages = {189-206},
zbl = {0177.40402},
url = {http://dml.mathdoc.fr/item/GDZPPN002301431}
}
RITTER, K. Optimization Theory in Linear Spaces. I.. Mathematische Annalen, Tome 180 (1969) pp. 189-206. http://gdmltest.u-ga.fr/item/GDZPPN002301431/