urce Code:
    </h3>

    <p>
      <ul>
        <li>
          <a href = "prime_serial.f">prime_serial.f</a>, the source code.
        </li>
        <li>
          <a href = "prime_serial.sh">prime_serial.sh</a>,
          commands to compile the source code.
        </li>
      </ul>
    </p>

    <h3 align = "center">
      Examples and Tests:
    </h3>

    <p>
      <ul>
        <li>
          <a href = "prime_serial_prb.f">prime_serial_prb.f</a>,
          a sample calling program.
        </li>
     