- MICHAEL FRANK, “ON HAHN–BANACH TYPE THEOREMS FOR HILBERT C*-MODULES”, Int. J. Math., 13, no. 07, 2002, 675
- Michael Frank, “Regularity results for classes of Hilbert C*-modules with respect to special bounded modular functionals”, Ann. Funct. Anal., 15, no. 2, 2024, 19