The unbridled worlds of Lutz&Guggisberg, Konrad Bitterli, 2002
Exploring the meanders of Lutz&Guggisberg, Andreas Baur
Brood, Felicity Lunn
Customs and space travel, Giovanni Carmine, 2006
I saw the truth, Stephan Kunz
The imaginary library, Stefan Zweifel
Bill MacCoy-The Call, Michel Mettler
