<?xml version='1.0'?>
<model name="van_der_pol_model" xmlns="http://www.cellml.org/cellml/1.0#" xmlns:cellml="http://www.cellml.org/cellml/1.0#">
<component name="main">
<variable initial_value="0" name="t" units="dimensionless"/>
<variable initial_value="-2" name="x" units="dimensionless"/>
<variable initial_value="0" name="y" units="dimensionless"/>
<variable initial_value="1" name="mu" units="dimensionless"/>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>t</ci>
</bvar>
<ci>x</ci>
</apply>
<ci>y</ci>
</apply>
<apply>
<eq/>
<apply>
<diff/>
<bvar>
<ci>t</ci>
</bvar>
<ci>y</ci>
</apply>
<apply>
<minus/>
<apply>
<times/>
<ci>mu</ci>
<apply>
<minus/>
<cn cellml:units="dimensionless">1</cn>
<apply>
<power/>
<ci>x</ci>
<cn cellml:units="dimensionless">2</cn>
</apply>
</apply>
<ci>y</ci>
</apply>
<ci>x</ci>
</apply>
</apply>
</math>
</component>
</model>