[silence] John cage and the use of silence in art

[MM B]

Hello!
My name is Miguel and I'm a portuguese cinema student.
I'm interested in Silence as a state of art for a work at university and i 
was wondering whether any of you could tell me where i could find any 
articles, essays.. about john cage specific view of silence.
Thanks in advance

Best regards

Sorry my english

Miguel Belo

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