@article{GDZPPN002483459,
title = {Kantorovic Operators of Second Order.},
journal = {Monatshefte f\"ur Mathematik},
volume = {95},
year = {1983},
pages = {33-44},
zbl = {0497.41011},
url = {http://dml.mathdoc.fr/item/GDZPPN002483459}
}
Nagel, Josef. Kantorovic Operators of Second Order.. Monatshefte für Mathematik, Tome 95 (1983) pp. 33-44. http://gdmltest.u-ga.fr/item/GDZPPN002483459/