The optimal constant in the L2 Folland-Stein inequality on the quaternionic Heisenberg group Article Sidebar Download Article PDF Download Article Abstract PDF Submitted: Nov 6, 2010 Accepted: Mar 14, 2011 Published: Sep 24, 2012 DOI: https://doi.org/10.2422/2036-2145.200211_002 Issue 2012: VOL. XI, ISSUE 3 Section Article Main Article Content Stefan Ivanov Ivan Minchev Dimiter Vassilev Abstract Article Details