New Matrix : upper-intermediate : / Kathy Gude with Jayne Wildman .  Oxford :  Oxford University Press,  2007 .  3 sv.  
New Matrix : upper-intermediate : student's book
New Matrix : upper-intermediate : workbook
New Matrix : upper-intermediate.

Matrix : intermediate workbook / Jayne Wildman with Kathy Gude .  Oxford :  Oxford University Press,  2004 .  46 s.   [1, currently available 1]

Matrix : intermediate student's book / Kathy Gude with Jayne Wildman .  Oxford :  Oxford University Press,  2003 .  152 s.   [1, currently available 1]