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    <p>Thanks, Peter and Bev.</p>
    <p>Does anyone have any other relevant papers?</p>
    <p>Martyn<br>
    </p>
    <div class="moz-cite-prefix">On 09/06/2021 14:32, Littlewood, Bev
      wrote:<br>
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    <blockquote type="cite"
      cite="mid:E389F68D-E318-4DED-BDF4-1DE607524442@city.ac.uk">
      There’s also the nice experimental work that was funded by NASA
      many years ago. For example:
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          Phyllis M. Nagel and James A. Skrivan, <i class="">Software
            reliability: repetitive run experimentation and modelling</i>,
          Boeing Computer Services Company, NASA-CR-165836, February
          1982, available at
          <a
href="https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19820013026.pdf"
            class="" moz-do-not-send="true">
https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19820013026.pdf</a>.
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          </span></div>
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          <span style="font-stretch: normal; font-size: 12px;
            line-height: normal;" class="">and</span></div>
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        <div style="margin: 0px; font-stretch: normal; font-size: 9px;
          line-height: normal; font-family: Arial;" class="">
          <span style="font-stretch: normal; font-size: 12px;
            line-height: normal;" class="">Janet R. Dunham and John L.
            Pierce,
            <i class="">An experiment in software reliability</i>, NASA
            Langley, NASA-CR-172553, May 1986, available at
            <a
href="https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19860020075.pdf"
              class="" moz-do-not-send="true">
https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19860020075.pdf</a>.
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          <span style="font-stretch: normal; font-size: 12px;
            line-height: normal;" class="">Bev</span></div>
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