Distinct AAA-ATPase  complexes function in discrete steps of nuclear assembly
M. Hetzer, H.H. Meyer, T.C. Walther, D. Bilbao-Cortes, G. Warren, I.W. Mattaj, Nature Cell Biology 3 (2001) 1086–1091.

An Atp-dependent, Ran-independent mechanism for nuclear import of the a and b spliceosome proteins
M. Hetzer, I.W. Mattaj, Journal of Cell Biology 148 (2000) 293–304.

GTP hydrolysis by Ran is required for nuclear envelope assembly
M. Hetzer, D. Bilbao-Cortés, T.C. Walther, O.J. Gruss, I.W. Mattaj, Molecular Cell 5 (2000) 1013–1024.