/span>
<span class="comment">% referenced paper.</span>

<span class="comment">%********************************************************************</span>
<span class="comment">% problem data</span>
<span class="comment">%********************************************************************</span>
N  = 8;      <span class="comment">% number of inverters</span>
CL = 20;     <span class="comment">% capacitance load</span>
Dmax = 20;   <span class="comment">% maximum delay through the circuit</span>
x_min = 1;