[2] Haisma, Jan, and G. A. C. M. Spierings. "Contact bonding, including direct-bonding in a historical and recent context of materials science and technology, physics and chemistry: historical review in a broader scope and comparative outlook." Materials Science and Engineering: R: Reports 37.1-2 (2002): 1-60.
[3] Alexe, Marin, and Ulrich Gösele, eds. Wafer bonding: applications and technology. Vol. 75. Springer Science & Business Media, 2013.
[4] Myatt, Chris, Nick Traggis, and Kathy Li Dessau. "Optical Contacting: Changing the Interface of Optics."