@article{bwmeta1.element.desklight-24dbc149-d70c-49d9-96cb-257216c08ae4,
author = {Clyde F. Martin and J. E. Valentine},
title = {Angles in metric and normed linear spaces},
journal = {Colloquium Mathematicae},
volume = {35},
year = {1976},
pages = {209-217},
zbl = {0329.46016},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.desklight-24dbc149-d70c-49d9-96cb-257216c08ae4}
}
Clyde F. Martin; J. E. Valentine. Angles in metric and normed linear spaces. Colloquium Mathematicae, Tome 35 (1976) pp. 209-217. http://gdmltest.u-ga.fr/item/bwmeta1.element.desklight-24dbc149-d70c-49d9-96cb-257216c08ae4/