@article{NUMA_1979__33_132628,
     author = {P. Rentrop and P. Kaps},
     title = {Generalized {Runge-Kutta} {Methods} of {Order} {Four} with {Stepsize} {Control} for {Stiff} {Ordinary} {Differential} {Equations.}},
     journal = {Numerische Mathematik},
     pages = {55--68},
     publisher = {mathdoc},
     volume = {33},
     year = {1979},
     zbl = {0436.65047},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1979__33_132628/}
}