Rajabi, M; Humphreys, D A; Avolio, G; Barmuta, P; Lukasik, K R; Nielsen, T S; Schreurs, D M M P (2018) Design and evaluation of nonlinear verification device for nonlinear vector network analyzers. IEEE Transactions on Microwave Theory and Techniques, 66 (2). pp. 1121-1130. ISSN 0018-9480