@article{1102811442,
author = {Micchelli, Charles A. and Pinkus, Allan},
title = {Total positivity and the exact $n$-width of certain sets in $L^1$.},
journal = {Pacific J. Math.},
volume = {73},
number = {2},
year = {1977},
pages = { 499-515},
language = {en},
url = {http://dml.mathdoc.fr/item/1102811442}
}
Micchelli, Charles A.; Pinkus, Allan. Total positivity and the exact $n$-width of certain sets in $L^1$.. Pacific J. Math., Tome 73 (1977) no. 2, pp. 499-515. http://gdmltest.u-ga.fr/item/1102811442/