"Rotunda of the Panrussian Exposition". International Database and Gallery of Structures. Nicolas Janburg, ICS. 2007. Retrieved 2007-11-28. http://en.structurae.de/structures/data/index.cfm?ID=s0000385 ↩
"Timber Lattice Roof for the Mannheim Bundesgartenschau" Happold, E & Liddel, W.I. The Structural Engineer, March 1975, Volume 3, Number 53." ↩
"Gridshell. I gusci a graticcio in legno tra innovazione e sperimentazione". Alinea Firenze. Sergio Pone, ICS. 2012. {{cite web}}: Missing or empty |url= (help) /wiki/Template:Cite_web ↩