@Misc{ MagTib24, author = { Magnani, Valentino and Tiberio, Daniele }, title = { The Michor-Mumford conjecture in Hilbertian H-type groups }, journal = { }, year = { 2024 }, pages = { }, URL = { http://cvgmt.sns.it/paper/6555/ }, note = { cvgmt preprint} }