Studio Arcanis

I have recently become interested in the work of Franz Bardon and was wondering if anyone here had any experience with it. I have begun the practices from 'Initiation into Hermetics', but am more concerned with the 'Practice of Magical Evocation'. From giving it a cursory reading it certainly sounds good enough, but the angelic names and orders seem odd. Could anyone enlighten me as to where he got them?

Thanks in advance for any information on this.