. Geophysics
            51, 1387-1403 (1986)
         </p>
         <h2>Acknowledgements<a name="8"></a></h2>
         <p>The synthetic Compass model was provided by the BG-GROUP, see also the <a href="BG_DISCLAIMER.txt">disclaimer</a>.
         </p>
         <p class="footer"><br><br></p>
      </div>
      <!--
##### SOURCE BEGIN #####
%% 2D modified gauss-newton full-waveform inversion
%
% Author: Xiang Li
%
%         Seismic Laboratory for Imaging and Modeling
%         Department of Earch & Ocean Scie