1. Unitary equivalence modulo the compact operators and extensions of C∗-algebras;Brown,1973
2. On the conditions for the existence of wave operators;Birman;Izv. Akad. Nauk. SSSR Ser. Mat.,1963
3. The stationary method in the abstract theory of scattering;Birman;Izv. Akad. Nauk. SSSR Ser. Mat.,1967
4. An invariant for certain operator algebras;Carey,1974
5. An exponential formula for determining functions;Carey;Indiana Univ. Math. J.,1974