@article{bwmeta1.element.bwnjournal-article-smv58i1p8bwm,
author = {R. Kirk and J. Crenshaw},
title = {Extension of real-valued $\alpha$-additive set functions},
journal = {Studia Mathematica},
volume = {54},
year = {1976},
pages = {129-139},
zbl = {0425.28001},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-smv58i1p8bwm}
}
Kirk, R.; Crenshaw, J. Extension of real-valued α-additive set functions. Studia Mathematica, Tome 54 (1976) pp. 129-139. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-smv58i1p8bwm/