@article{bwmeta1.element.bwnjournal-article-aav52i4p307bwm,
author = {Costa Pereira, N.},
title = {Elementary estimates for the Chebyshev function (x) and for the Mobius function M(x)},
journal = {Acta Arithmetica},
volume = {52},
year = {1989},
pages = {307-337},
zbl = {0696.10007},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-aav52i4p307bwm}
}
Costa Pereira, N. Elementary estimates for the Chebyshev function 𝜓(x) and for the Mobius function M(x). Acta Arithmetica, Tome 52 (1989) pp. 307-337. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-aav52i4p307bwm/