@article{GDZPPN002064049, title = {Pompeiu's problem on symmetric spaces.}, journal = {Commentarii mathematici Helvetici}, volume = {55}, year = {1980}, pages = {593-621}, zbl = {0452.43012}, url = {http://dml.mathdoc.fr/item/GDZPPN002064049} }
Berenstein, C.A.; Zalcman, L. Pompeiu's problem on symmetric spaces.. Commentarii mathematici Helvetici, Tome 55 (1980) pp. 593-621. http://gdmltest.u-ga.fr/item/GDZPPN002064049/