@Article{ ArcSar15, author = { Arcozzi, Nicola and Sarfatti, Giulia }, title = { Invariant metrics for the quaternionic Hardy space }, journal = { J. Geom. Anal. }, year = { 2015 }, doi = { 10.1007/s12220-014-9503-4 }, volume = { 25 }, number = { 3 }, pages = { 2028-2059 }, URL = { https://gecogedi.dimai.unifi.it/paper/122/ }, note = { cvgmt preprint} }