Serge Gratton, Jean Tshimanga Ilunga. On a second-order expansion of the truncated singular subspace decomposition. Dans : Numerical Linear Algebra with Applications, Wiley, Vol. 23 N. 3, p. 519-534, 2016.
El Houcine Bergou, Serge Gratton, Jean Tshimanga Ilunga. The exact condition number of the truncated singular value solution of a linear ill-posed problem. Dans : SIAM Journal on Mathematical Analysis, Society for Industrial and Applied Mathematics (SIAM), USA, Vol. 35 N. 3, p. 1073-1085, 2014.
Serge Gratton, David Titley-Peloquin, Philippe Toint, Jean Tshimanga Ilunga. Differentiating the Method of Conjugate Gradients. Dans : SIAM Journal on Matrix Analysis and Applications, Society for Industrial and Applied Mathematics (SIAM), USA, Vol. 35 N. 1, p. 110-126, 2014.
Serge Gratton, Philippe Toint, Jean Tshimanga Ilunga. Conjugate-gradients versus multigrid solvers for diffusion-based correlation models in data assimilation. Dans : Quarterly Journal of the Royal Meteorological Society, Wiley, Vol. 139 N. 675, p. 1481-1487, 2014.
Serge Gratton, David Titley-Peloquin, Jean Tshimanga Ilunga. Sensitivity and conditioning of the truncated total least squares solution. Dans : SIAM Journal on Matrix Analysis and Applications, Society for Industrial and Applied Mathematics (SIAM), USA, Vol. 34 N. 3, p. 1257-1276, 2013.
Serge Gratton, Philippe Toint, Jean Tshimanga Ilunga. Range-Space Variants and Inexact Matrix-Vector Products in Krylov Solvers for Linear Systems Arising from Inverse Problems. Dans : SIAM Journal on Matrix Analysis and Applications, Society for Industrial and Applied Mathematics (SIAM), USA, Vol. 32 N. 3, p. 969-986, 2011.
Serge Gratton, Annick Sartenaer, Jean Tshimanga Ilunga. On a class of limited memory preconditioners for large scale linear systems with multiple right-hand sides. Dans : SIAM Journal on Optimization, Society for Industrial and Applied Mathematics (SIAM), USA, Vol. 21 N. 3, p. 912-935, 2011.