@article{PDML_1982___4B_A14_0, author = {Pytlik, T.}, title = {Radial Convolutors on Free Groups}, journal = {Publications du D\'epartement de math\'ematiques (Lyon)}, year = {1982}, pages = {1-1}, zbl = {0572.43002}, language = {en}, url = {http://dml.mathdoc.fr/item/PDML_1982___4B_A14_0} }
Pytlik, T. Radial Convolutors on Free Groups. Publications du Département de mathématiques (Lyon), (1982), p. 1. http://gdmltest.u-ga.fr/item/PDML_1982___4B_A14_0/