Microwave exposure systems for in vivo biological experiments: A systematic review, Paffi, A., Merla Caterina, Pinto Rosanna, Lovisolo G.A., Liberti M., Marino Carmela, Repacholi M., and Apollonio F. , IEEE Transactions on Microwave Theory and Techniques, Volume 61, Number 5, p.1980-1993, (2013)