Abstract, Nexus 2002, Richard Padovan: Dom Hans Van Der Laan And The Plastic Number

http://www.emis.de/journals/NNJ/conferences/N2002-Padovan.html

Richard Padovan presents the plastic number, a system of proportion discovered by Dom Hans Van Der Laan, at the Nexus 2002 conference in Obidos, Portugal, 15-18 June 2002