@article{GDZPPN00118542X,
title = {On monotone extensions of boundary data.},
journal = {Numerische Mathematik},
volume = {59},
year = {1991},
pages = {477-492},
zbl = {0753.65011},
url = {http://dml.mathdoc.fr/item/GDZPPN00118542X}
}
Dahmen, W.; DeVore, R.A.; ... On monotone extensions of boundary data.. Numerische Mathematik, Tome 59 (1991) pp. 477-492. http://gdmltest.u-ga.fr/item/GDZPPN00118542X/