Dieter Maurer, Xenia Guhl, Nicole Schwarz, Regula Stettler, Claudia Riboni (2012):
Early Pictures in Ontogeny - Process and Product.
Part 1: Text. Part 2: Film Archive. English Version.
Online in Internet: www.early-pictures.ch/process/en
[First published 2012-09-20; cited see date of actual version].