Martini 16:48, 22 March 2012 (CET) Trying to contact him at: jbarnum@ins.infonet.net (not working)
Martini 16:57, 22 March 2012 (CET) Trying his work email jbarnum@descriptor.com
Martini 23:04, 8 July 2012 (CEST) Requested permission for his book/article via LinkedIn.