@article{GDZPPN002058294,
title = {An Integral Equation and a General Existence Theorem for Harmonic Functions.},
journal = {Commentarii mathematici Helvetici},
volume = {38},
year = {1963},
pages = {284-292},
zbl = {0132.30601},
url = {http://dml.mathdoc.fr/item/GDZPPN002058294}
}
Sario, Leo. An Integral Equation and a General Existence Theorem for Harmonic Functions.. Commentarii mathematici Helvetici, Tome 38 (1963) pp. 284-292. http://gdmltest.u-ga.fr/item/GDZPPN002058294/