Before revision: Jaime Aquilera & Roc Berenquer (2007) Design and Test of Integrated Inductors for RF Applications, p. 24, Springer Science & Business Media ISBN 0306487005 .
After revision: Jaime Aquilera & Roc Berenquer (2007) Design and Test of Integrated Inductors for RF Applications, p. 24, Springer Science & Business Media ISBN 978-0470025871 .