@article{bwmeta1.element.bwnjournal-article-fmv26i1p17bwm,
author = {A. Ward},
title = {On the differentiation of additive functions of rectangles},
journal = {Fundamenta Mathematicae},
volume = {27},
year = {1936},
pages = {167-182},
zbl = {0013.25103},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-fmv26i1p17bwm}
}
Ward, A. On the differentiation of additive functions of rectangles. Fundamenta Mathematicae, Tome 27 (1936) pp. 167-182. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-fmv26i1p17bwm/