@article{bwmeta1.element.bwnjournal-article-smv64i1p14bwm,
author = {Alberto Torchinsky},
title = {The K-functional for rearrangement invariant spaces},
journal = {Studia Mathematica},
volume = {64},
year = {1979},
pages = {175-190},
zbl = {0414.46021},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-smv64i1p14bwm}
}
Torchinsky, Alberto. The K-functional for rearrangement invariant spaces. Studia Mathematica, Tome 64 (1979) pp. 175-190. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-smv64i1p14bwm/