@article{bwmeta1.element.bwnjournal-article-fmv85i1p18bwm,
author = {Roy Davies},
title = {Representation of functions of two variables as sums of rectangular functions, I},
journal = {Fundamenta Mathematicae},
volume = {85},
year = {1974},
pages = {177-183},
zbl = {0295.26014},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-fmv85i1p18bwm}
}
Davies, Roy. Representation of functions of two variables as sums of rectangular functions, I. Fundamenta Mathematicae, Tome 85 (1974) pp. 177-183. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-fmv85i1p18bwm/