Solving the systems of equations arising in the discretization of some nonlinear p.d.e.'s by implicit Runge-Kutta methodsGeorgios Akrivis, Vassilios A. Dougalis and Ohannes KarakashianESAIM: M2AN, 31 2 (1997) 251-287DOI: https://doi.org/10.1051/m2an/1997310202511