@@ -53,7 +53,7 @@ Hipparchus can also be cited with its own <a href="https://zenodo.org/records/84
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<p><spanclass="fa-li fa-lg fa fa-gears"></span><ahref="https://orekit.org/doc/technical-notes/2024-10-01-Serra_R-Indirect_Approach_for_Optimal_Control_in_Orekit.pdf">Indirect approach for optimal control in Orekit</a><br/>
<p><spanclass="fa-li fa-lg fa fa-gears"></span><ahref="https://orekit.org/doc/technical-notes/2025-02-05-Serra_R-Indirect_Approach_for_Optimal_Control_in_Orekit_v13.0.pdf">Indirect approach for optimal control in Orekit</a><br/>