Archive document : Correspondence / Letter
Foos, Bernard ; Frieling, Rudolf ; Riehs, Christian. – [Letter to Steina Vasulka]. – Karlsruhe : ZKM/Center for Art and Media Karlsruhe ; Baden-Baden : Südwestrundfunk ; Linz : ORF Landesstudio Oberösterreich, April 30, 1997. – N. p. – Included in the file entitled «Pyroglyphs».