@article{MAN_1983__262_163711,
     author = {Thomas K\"uhn},
     title = {On the {r-Nuclearity} of {Gaussian} {Covariances} and the {Composition} of {Nuclear} {Operators.}},
     journal = {Mathematische Annalen},
     pages = {377--382},
     publisher = {mathdoc},
     volume = {262},
     year = {1983},
     zbl = {0488.47009},
     url = {http://geodesic.mathdoc.fr/item/MAN_1983__262_163711/}
}