[1999] The Structure of Consciousness: Liminocentricity, Enantiodromia and Personality. 1999 [text]
[1999] The Enneagram as Classic 'Double Mandala': The 'I Ching' and other 'Divination Machines'. (Part I) March 1999 [text] (Fudjack, John / Dinkelaker, Patricia)
[1999] The 'Self' as Hyperbody: nested realities and the 'fourth dimension'. 1999 [text] (Fudjack, John / Dinkelaker, Patricia)
[1999] Enneagram as Mandala. 1999 [text] (Fudjack, John / Dinkelaker, Patricia)