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  <div class="csl-entry"><div class="csl-left-margin">[1]</div><div class="csl-right-inline">M. M. Ashraf, M. O. Ullah, T. N. Malik, A. B. Waqas, M. Iqbal, and F. Siddiq, “Robust Extraction of Harmonics using Heuristic Advanced Gravitational Search Algorithm-based Least Square Estimator”, <i>The Nucleus</i>, vol. 54, no. 4, pp. 219–231, Jan. 2018.</div></div>
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