@article{GDZPPN002239027,
title = {Trace Formulae for S1 invariant Green's Operators on S2.},
journal = {Manuscripta mathematica},
volume = {94},
year = {1997},
pages = {357-368},
zbl = {0882.58056},
url = {http://dml.mathdoc.fr/item/GDZPPN002239027}
}
Engman, Martin. Trace Formulae for S1 invariant Green's Operators on S2.. Manuscripta mathematica, Tome 94 (1997) pp. 357-368. http://gdmltest.u-ga.fr/item/GDZPPN002239027/