RT Journal Article SR Electronic A1 MACUROVÁ, Anna A1 MACURA, Dušan T1 DIFFERENTIAL EQUATIONS SYSTEMS AND COORDINATE SYSTEMS JF Trends in education YR 2008 VO 1 IS 1 SP 574 OP 577 UL https://tvv-journal.upol.cz/en/artkey/tvv-200801-0134.php AB The article introduces some coordinate systems important for transformation nonlinear differential equations system and investigated the properties of the solutions. The nonlinear differential equations systems are investigated as quasilinear differential equations systems.