TY - JOUR AU - Zítko, Jan TI - Two step extrapolation and optimum choice of relaxation factor of the extrapolated S.O.R. method JO - Applications of Mathematics PY - 1988 SP - 177 EP - 196 VL - 33 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/AM.1988.104301/ DO - 10.21136/AM.1988.104301 LA - en ID - 10_21136_AM_1988_104301 ER -