@article{MAN_1980__251_163430,
     author = {Bernd Carl and Hans Triebel},
     title = {Inequalities {Between} {Eigenvalues,} {Entropy} {Numbers,} and {Related} {Quantities} of {Compact} {Operators} in {Banach} {Spaces.}},
     journal = {Mathematische Annalen},
     pages = {129--134},
     publisher = {mathdoc},
     volume = {251},
     year = {1980},
     zbl = {0465.47019},
     url = {http://geodesic.mathdoc.fr/item/MAN_1980__251_163430/}
}