@article{NUMA_1972__20_132181,
     author = {P.J. van der Houwen},
     title = {Explicit {Runge-Kutta} {Formulas} with {Increased} {Stability} {Boundaries.}},
     journal = {Numerische Mathematik},
     pages = {149--164},
     publisher = {mathdoc},
     volume = {20},
     year = {1972},
     zbl = {0233.65039},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1972__20_132181/}
}