@article{2020,
author = {Suppes, Patrick},
title = {A set of independent axioms for extensive quantities},
journal = {Portugaliae mathematica},
volume = {10},
year = {1951},
pages = {163-172},
zbl = {0044.17102},
mrnumber = {0047576},
language = {en},
url = {http://dml.mathdoc.fr/item/2020}
}
Suppes, Patrick. A set of independent axioms for extensive quantities. Portugaliae mathematica, Tome 10 (1951) pp. 163-172. http://gdmltest.u-ga.fr/item/2020/