Lippold Haken; Ed Tellman; Patrick Wolfe (1998). "An Indiscrete Music Keyboard". Computer Music Journal. 22 (1). MIT Press: 30–48. doi:10.2307/3681043. JSTOR3681043.
Scaletti, Carla (1989). "The Kyma/Platypus Computer Music Workstation". Computer Music Journal. 13 (2). MIT Press: 23–38. doi:10.2307/3680038. JSTOR3680038.
Lippold Haken; Ed Tellman; Patrick Wolfe (1998). "An Indiscrete Music Keyboard". Computer Music Journal. 22 (1). MIT Press: 30–48. doi:10.2307/3681043. JSTOR3681043.
Scaletti, Carla (1989). "The Kyma/Platypus Computer Music Workstation". Computer Music Journal. 13 (2). MIT Press: 23–38. doi:10.2307/3680038. JSTOR3680038.
Lippold Haken; Radi Abdullah; Mark Smart (Oct 1992). "The Continuum: A Continuous Music Keyboard"(PDF). Proceedings of the International Computer Music Conference. San Jose: International Computer Music Association. pp. 81–84.