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<div class="csl-bib-body">
  <div class="csl-entry"><div class="csl-left-margin">(1)</div><div class="csl-right-inline">Wei, Y.; Shang, S.; Bai, Z. Applications of Variational Methods to Some Three-Point Boundary Value Problems With Instantaneous and Noninstantaneous Impulses. <i>NAMC</i> <b>2022</b>, <i>27</i> (3), 466-478. <a href="https://doi.org/10.15388/namc.2022.27.26253">https://doi.org/10.15388/namc.2022.27.26253</a>.</div></div>
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