1. On the duration of random walks;Wasow;Ann. Math. Statistics,1951
2. Random walks and the eigenvalues of elliptic difference equations;Wasow;J. Res. Nat'l. Bur. Standards,1951
3. On the mean duration of random walks;Wasow;J. Res. Nat'l. Bur. Standards,1951
4. A note on the inversion of matrices by random walks;Wasow;Math. Tables and Other Aids to Computation,1952
5. The first boundary value problem for εΔu + Aux + Buy + Cu = D for small ε;Levinson;Ann. Math.,1950