@article{bwmeta1.element.bwnjournal-article-aav2i2p197bwm,
author = {Estermann, T},
title = {On Waring's problem for fourth and higher powers},
journal = {Acta Arithmetica},
volume = {2},
year = {1936},
pages = {197-211},
zbl = {0018.05204},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-aav2i2p197bwm}
}
Estermann, T. On Waring's problem for fourth and higher powers. Acta Arithmetica, Tome 2 (1936) pp. 197-211. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-aav2i2p197bwm/