1. Foundations of the theory of dynamical systems of infinitely many degrees of freedom. I;Segal;Mat.-Fys. Medd. Dansk. Vid. Selsk.,1959
2. Foundations of the theory of dynamical systems of infinitely many degrees of freedom. II;Segal;Canadian J. Math.,1961
3. Mathematical characterization of the physical vacuum for a linear Bose-Einstein field;Segal;Illinois J. Math.,1962
4. Conjugacy to unitary groups within the infinite dimensional symplectic group;Segal;Argonne National Laboratory report ANL-7216,1966
5. States of the Clifford algebra;Shale;Ann. Math.,1964