Markoff, John. "Sun and I.B.M. to Offer New Class of High-End Servers." New York Times [online edition]. http://www.nytimes.com (26 April 2007).

Markoff, John. "Sun and I.B.M. to Offer New Class of High-End Servers." New York Times [online edition]. http://www.nytimes.com (26 April 2007).