http://researchonline.federation.edu.au/vital/access/manager/Index ${session.getAttribute("locale")} 5 Borwein–Preiss vector variational principle http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:13009 Wed 07 Apr 2021 14:01:12 AEST ]]> Borwein-Preiss variational principle revisited http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:10517 Wed 07 Apr 2021 13:55:51 AEST ]]>