1. Linear Operators;Dunford,1963
2. A continual analogue of some theorems on Toeplitz matrices;Akhiezer;Ukrain. Mat. Z.,1964
3. Continual analogue of some theorems on Toeplitz matrices
4. Theory and applications of Toeplitz forms;Kac,1965
5. On a formula of Kac and Akhiezer;Hirschman;J. Math. Mech.,1966