<Li> Cott, Jonathan . 1973 . Stockhausen: Conversations with the Composer . New York: Simon and Schuster . ISBN 0 - 671 - 21495 - 0 . </Li> <Li> (Craft, Robert). 1968 . "Side Effects: An Interview with Stravinsky". New York Review of Books (14 March): 3--8 . </Li> <Li> Craft, Robert . 2002 . An Improbable Life: Memoirs . Nashville: Vanderbilt University Press . </Li> <Li> Craft, Robert, and Igor Stravinsky. 1960 . Memories and Commentaries Garden City, NY: Doubleday . </Li>

Give an example of a musical work by varese stockhausen and cage