@Misc{ PinSav25a, author = { Pinzi, Alessandro and Savaré, Giuseppe }, title = { Nested superposition principle for random measures and the geometry of the Wasserstein on Wasserstein space }, journal = { }, year = { 2025 }, pages = { }, URL = { http://cvgmt.sns.it/paper/7347/ }, note = { cvgmt preprint} }