@article{GDZPPN002431947,
title = {The Resolvent for Simple Random Walks on the Free Product of Two Discrete Groups.},
journal = {Mathematische Zeitschrift},
volume = {192},
year = {1986},
pages = {109-116},
zbl = {0608.60015},
url = {http://dml.mathdoc.fr/item/GDZPPN002431947}
}
Soardi, Paolo M. The Resolvent for Simple Random Walks on the Free Product of Two Discrete Groups.. Mathematische Zeitschrift, Tome 192 (1986) pp. 109-116. http://gdmltest.u-ga.fr/item/GDZPPN002431947/