Nested factorisation. paper SPE 12264 presented at the SPE 1983 Reservoir Simulation Symposium, 1983. ,
Iterative methods for the solution of linear equations based on incomplete block factorization of the matrix. paper SPE 12262 presented at the SPE 1983 Reservoir Simulation Symposium, 1983. ,
An Efficient Preconditioned CG Method for the Solution of a Class of Layered Problems with Extreme Contrasts in the Coefficients, Journal of Computational Physics, vol.152, issue.1, pp.385-403, 1999. ,
DOI : 10.1006/jcph.1999.6255