Journal article (2002) - MD Upward (author), LP Kouwenhoven (author), Leo P. Kouwenhoven (author), L. P. Kouwenhoven (author), L.P. Kouwenhoven (author), Leo Kouwenhoven (author), AF Morpurgo (author), AF Morpurgo (author), N Kikugawa (author), ZQ Mao (author), Y Maeno (author)