@article{GDZPPN001168185,
title = {Interpolation in Sobolevschen Funktionenr\"aumen.},
journal = {Numerische Mathematik},
volume = {13},
year = {1969},
pages = {334-343},
zbl = {0221.65012},
url = {http://dml.mathdoc.fr/item/GDZPPN001168185}
}
NITSCHE, J. Interpolation in Sobolevschen Funktionenräumen.. Numerische Mathematik, Tome 13 (1969) pp. 334-343. http://gdmltest.u-ga.fr/item/GDZPPN001168185/