%0 Journal Article %A ZieliƄski, Janusz %A Ossowski, Piotr %T Rings of constants of generic 4D Lotka-Volterra systems %J Czechoslovak Mathematical Journal %D 2013 %P 529-538 %V 63 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.1007/s10587-013-0035-z/ %R 10.1007/s10587-013-0035-z %G en %F 10_1007_s10587_013_0035_z