Ball, J. A. (2010). Topics in operator theory Volume 2. Sytems and mathematical physics: Proceedings of the 19th International Workshop on Operator Theory and its Applications, College of William and Mary, 2008 ; a tribute to Israel Gohberg on the occasion of his 80th birthday. Birkh�user.

Ball, Joseph A. Topics in Operator Theory Volume 2. Sytems and Mathematical Physics: Proceedings of the 19th International Workshop on Operator Theory and Its Applications, College of William and Mary, 2008 ; a Tribute to Israel Gohberg on the Occasion of His 80th Birthday. Basel: Birkh�user, 2010.

Ball, Joseph A. Topics in Operator Theory Volume 2. Sytems and Mathematical Physics: Proceedings of the 19th International Workshop on Operator Theory and Its Applications, College of William and Mary, 2008 ; a Tribute to Israel Gohberg on the Occasion of His 80th Birthday. Birkh�user, 2010.