| 1958 | ||
|---|---|---|
| 2 | Pentti Laasonen: On the Truncation Error of Discrete Approximations to the Solutions of Dirichlet Problems in a Domain with Corners. J. ACM 5(1): 32-38 (1958) | |
| 1 | Pentti Laasonen: On the Solution of Poisson's Difference Equation. J. ACM 5(4): 370-382 (1958) | |