<?xml version="1.0" encoding="UTF-8"?>
<sbml xmlns="http://www.sbml.org/sbml/level2" level="2" version="1">
    <model>
        <listOfCompartments>
            <compartment id="cell" size="1"/>
        </listOfCompartments>
        <listOfSpecies>
            <species id="P" compartment="cell" initialConcentration="0"/>
        </listOfSpecies>
        <listOfParameters>
            <parameter id="tau" value="1"/>
            <parameter id="m" value="0.5"/>
            <parameter id="q" value="1"/>
            <parameter id="delta_t" value="1"/>
        </listOfParameters>
        <listOfRules>
            <rateRule variable="P">
                <math xmlns="http://www.w3.org/1998/Math/MathML">
                 <apply>
                  <divide/>
                  <apply>
                   <minus/>
                   <apply>
                    <divide/>
                    <cn> 1 </cn>
                    <apply>
                     <plus/>
                     <cn> 1 </cn>
                     <apply>
                      <times/>
                      <ci> m </ci>
                      <apply>
                       <power/>
                       <apply>
                        <csymbol encoding="text"
                                 definitionURL="http://www.sbml.org/sbml/symbols/delay">
                            delay
                        </csymbol>
                        <ci> P </ci>
                        <ci> delta_t </ci>
                       </apply>
                       <ci> q </ci>
                      </apply>
                     </apply>
                    </apply>
                   </apply>
                   <ci> P </ci>
                  </apply>
                  <ci> tau </ci>
                 </apply>
                </math>
            </rateRule>
        </listOfRules>
    </model>
</sbml>
