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@article{MAN_1969__182_161861, author = {K. RITTER}, title = {Optimization {Theory} in {Linear} {Spaces.} {I.}}, journal = {Mathematische Annalen}, pages = {189--206}, publisher = {mathdoc}, volume = {182}, year = {1969}, zbl = {0177.40402}, url = {http://geodesic.mathdoc.fr/item/MAN_1969__182_161861/} }
K. RITTER. Optimization Theory in Linear Spaces. I.. Mathematische Annalen, Tome 182 (1969), pp. 189-206. http://geodesic.mathdoc.fr/item/MAN_1969__182_161861/