Mobile Broadband Traffic Forecast Modeling for Network Evolution Studies. - István Z. Kovács; Preben E. Mogensen; Birger Christensen; Rauli Jarvela (VTC Fall, 2011)

IBM POWER7+ design for higher frequency at fixed power. - Victor V. Zyuban; Scott A. Taylor; Birger Christensen; A. R. Hall; Christopher J. Gonzalez; Joshua Friedrich; Frances Clougherty; Jon Tetzloff; Rajeev R. Rao (IBM J. Res. Dev., 2013)