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Continue to ChatStreamline topologies of axisymmetric flow near non-simple degenerate points using normal forms - https://avesis.erciyes.edu.tr/yayin/cefc5489-7c80-48c6-b302-6c69c5b8acf6/streamline-topologies-of-axisymmetric-flow-near-non-simple-degenerate-points-using-normal-forms