On the existence of positive solutions of Yamabe-type equations on the Heisenberg group. Brandolini, L.; Rigoli, M.; Setti, A.G. — 1996 Electronic Research Announcements of the American Mathematical Society [electronic only]
Spherical Means and the Restriction Phenomenon. L. Brandolini; A. Iosevich — 2001 The journal of Fourier analysis and applications [[Elektronische Ressource]]