@article{00617202, title = {On a problem of R. Schilling. I.}, journal = {Mathematica Pannonica}, volume = {5}, year = {1994}, pages = {29-65}, zbl = {0802.39006}, language = {en}, url = {http://dml.mathdoc.fr/item/00617202} }
Förg-Rob, Wolfgang. On a problem of R. Schilling. I.. Mathematica Pannonica, Tome 5 (1994) pp. 29-65. http://gdmltest.u-ga.fr/item/00617202/