%0 Journal Article %A Piotr Ossowski %A Janusz Zieliński %T Polynomial algebra of constants of the four variable Lotka–Volterra system %J Colloquium Mathematicum %D 2010 %P 299-309 %V 120 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm120-2-9/ %R 10.4064/cm120-2-9 %G fr %F 10_4064_cm120_2_9