1. FENDER: A finite element code for the solution of the diffusion equation in shield design applications;Shuttleworth,1981
2. The why and how of finite elements;Ackroyd,1981
3. Two FORTRAN subroutines for direct solution of linear equations whose matrix is sparse, symmetric and positive-definite;Reid;United Kingdom Atomic Energy Authority, AERE-R7119,1972
4. Applied Numerical Methods;Carnahan,1969
5. Matrix Iterative Analysis;Varga,1962