Group exhibition catalogue Brougher, Kerry et al. – Visual music : synaesthesia in art and music since 1900. – London : Thames and Hudson, 2005. – 271 p.
Archive document : Manuscript Mattis, Olivia. – Interview of Leon Theremin (Lev Sergeyevich Termen). – 16 p. – Manuscript. – Transcription of the June 16, 1986 interview.