@article{GDZPPN002332868,
title = {Uniform approximation by polynomials in two functions.},
journal = {Mathematische Annalen},
volume = {283},
year = {1989},
pages = {529-536},
url = {http://dml.mathdoc.fr/item/GDZPPN002332868}
}
O'Farrell, A.G.; Preskenis, K.J. Uniform approximation by polynomials in two functions.. Mathematische Annalen, Tome 283 (1989) pp. 529-536. http://gdmltest.u-ga.fr/item/GDZPPN002332868/