ENHANCED BOOKS
Available from iTunes:

POLYHEDRA
The Regular Solids:Their History and Evolution
POLYHEDRA 2
Star Polyhedra,Archimedean and Other Solids
On the Road | Down by the Water
A Road Trip Across Bridges With Paths Intersecting Rivers, Lakes, Waterfalls and Canals
Sky Spirals
Frames of Sky from Earth
Camminando: Urban Artwalks
SPACETECTURE abridged version

BOOKS
Visualizing with Cad
Springer-Verlag, 1994
Designing Digital Space: an Architect's Guide to Virtual Reality
Wiley, 1996
Architettura della Cosmologia
Axes Mundi Press, 2008
Form Geometry Structure |From Nature To Design
BIP, 2011
spacetecture
kindle edition, 2009