%0 Journal Article %A Huťa, Anton %A Penjak, Vladimír %T A contribution to Runge-Kutta formulas of the 7th order with rational coefficients for systems of differential equations of the first order %J Applications of Mathematics %D 1984 %P 411-422 %V 29 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1984.104115/ %R 10.21136/AM.1984.104115 %G en %F 10_21136_AM_1984_104115