OA only via website.
https://virtusinterpress.org/Journal-Policies,4316.html - "Authors may deposit the accepted version of the peer-reviewed article on their personal websites, their institution’s repository or any non-commercial repository after 12 months of publication on the journal website. In addition, an acknowledgement must be given to the original source of publication and a link should be inserted to the published article on the journal’s website."  Publisher has an OA publishing model (with APC) but no evidence that this article was published under that model.  Lyn 17/11/17