Watchers

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  Claude Hannan

  https://www.ge.infn.it/wiki//gpu/index.php?title=%D0%93%D0%B4%D0%B5_%D0%BE%D0%B1%D0%BC%D0%B5%D0%BD%D1%8F%D1%82%D1%8C_%D0%B2%D0%B0%D0%BB%D1%8E%D1%82%D1%83_%D0%B2_%D0%9C%D0%B5%D0%BA%D1%81%D0%B8%D0%BA%D0%B5.