Journal article (2008) - M Hajenius (author) , P. Khosropanah (author) , HE Beere (author) , J.N. Hovenier (author) , J.R. Gao (author) , TM Klapwijk (author) , S Barbieri (author) , S Dhillon (author) , P Filloux (author) , C Sirtori (author) , DA Ritchi (author)