diff --git a/HELP_PREDEFINED/SW_Propagation_Model b/HELP_PREDEFINED/SW_Propagation_Model
index 1e07067..a57f68e 100644
--- a/HELP_PREDEFINED/SW_Propagation_Model
+++ b/HELP_PREDEFINED/SW_Propagation_Model
@@ -1,3 +1,5 @@
 <h1>Solar Wind Propagation Models</h1>
 <h2>Description</h2>
 <p>MHD [1D/3D] simulations of Solar Wind propagation in the heliosphere</p>
+<h2>Acknowledgments</h2>
+<p>These datasets have been derived and provided by the Planetary Space Weather Services (PSWS) Virtual Activity of the Europlanet H2020 Research Infrastructure funded by the European Union's Horizon 2020 research and innovation programme under grant agreement No 654208, and by the Sun Planet Interactions Digital Environment on Request (SPIDER) Virtual Activity of the Europlanet 2024 Research Infrastucture funded by the European Union's Horizon 2020 research and innovation programme under grant agreement No 871149. <a href="http://spider-europlanet.irap.omp.eu/" target="_blank">http://spider-europlanet.irap.omp.eu/</a></p>
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