Pentti Laasonen

An imbedding method of iteration with global convergence

Pentti Laasonen, P. Laasonen, 1970, Computing.

On the Solution of Poisson's Difference Equation

Pentti Laasonen, P. Laasonen, 1958, JACM.

On the Truncation Error of Discrete Approximations to the Solutions of Dirichlet Problems in a Domain with Corners

Pentti Laasonen, P. Laasonen, 1958, JACM.

On the Iterative Solution of the Matrix Equation AX 2-1 = 0

Pentti Laasonen, P. Laasonen, 2010 .