@article{GDZPPN002230747,
title = {Liouville's operator for a disc in space.},
journal = {Manuscripta mathematica},
volume = {67},
year = {1990},
pages = {165-186},
zbl = {0702.45015},
url = {http://dml.mathdoc.fr/item/GDZPPN002230747}
}
Berg, Christian; Fuglede, Bent. Liouville's operator for a disc in space.. Manuscripta mathematica, Tome 67 (1990) pp. 165-186. http://gdmltest.u-ga.fr/item/GDZPPN002230747/