@article{NUMA_1989__56_2-3_133391,
     author = {Martin H. Gutknecht},
     title = {Stationary and {Almost} {Stationary} {Iterative} (k, {l)-Step} {Methods} for {Linear} and {Nonlinear} {Systems} of {Equations.}},
     journal = {Numerische Mathematik},
     pages = {179--214},
     publisher = {mathdoc},
     volume = {56},
     number = {2-3},
     year = {1989},
     zbl = {0685.65044},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1989__56_2-3_133391/}
}