Journal article (2007) - S Russo (author), S Russo (author), J Tobiska (author), T.M. Klapwijk (author), Teun M. Klapwijk (author), Teun Klapwijk (author), T. M. Klapwijk (author), TM Klapwijk (author), Teunis M. Klapwijk (author), AF Morpurgo (author), AF Morpurgo (author)