@article{GDZPPN00204675X,
title = {Orientierung in angeordneten affinen R\"aumen},
journal = {Beitr\"age zur Algebra und Geometrie = Contributions to algebra and geometry},
volume = {5},
year = {1976},
pages = {23-32},
zbl = {0346.50001},
url = {http://dml.mathdoc.fr/item/GDZPPN00204675X}
}
BÖRNER, W. Orientierung in angeordneten affinen Räumen. Beiträge zur Algebra und Geometrie = Contributions to algebra and geometry, Tome 5 (1976) pp. 23-32. http://gdmltest.u-ga.fr/item/GDZPPN00204675X/