INTERNATIONAL IMPROVISED MUSIC ARCHIVE - STOCKHAUSEN, KARLHEINZ (DE), 1928-2007
Composer. He also appeared as a musician in his own intuitive music.
Questions and Answers on Intuitive Music Transscript from a lecture session in London, 1972.
Russian translation: Штокхаузен: диалоги об интуитивной музыке
See also the article by Davies, Hugh, "Stockhausen's Intuitive Music" here at IIMA.