Here is a list of works on Ephesians I plan on buying/borrowing:
1) Ephesians, E. Best
2) Essays on Ephesians, E. Best
3) Studies in Ephesians, N. Dahl
4) Ephesians, H. Hoehner
5) Ephesians, M. Barth
6) Ephesians, R. Schnackenburg
7) The Theology of the latter Pauline Epistles, Lincoln; Wedderburn; Dunn
8) Ephesians, Muddiman
Any other suggestions? Anything related to the Christology in Ephesians would be especially appreciated:-)