Update tre-fx.md

Author: stain

_projects/tre-fx.md

@@ -83,6 +83,23 @@ Thomas Giles, Stian Soiland-Reyes, Jonathan Couldridge, Stuart Wheater, Blaise T
 _Zenodo_ / DARE UK  
 <https://doi.org/10.5281/zenodo.10055354>
 
+Tom Giles, Jonathan Couldridge, Sam Cox, Daniel Lea, Vasiliki Panagi, Simon Thompson, Philip Quinlan (2024):  
+[**TRE-FX Technical Documentation - Primary Implementation**](https://doi.org/10.5281/zenodo.10376658).  
+_Zenodo_
+<https://doi.org/10.5281/zenodo.10376658> (in preparation)
+
+Blaise Thomson, Naaman Tammuz, Thomas Giles, Philip Quinlan, Carole Goble (2024):  
+[**TRE-FX Technical Documentation - Bitfount Implementation**](https://doi.org/10.5281/zenodo.10376572).  
+_Zenodo_
+<https://doi.org/10.5281/zenodo.10376572>
+
+Stuart Wheater, Thomas Giles, Philip Quinlan, Carole Goble (2024):  
+[**TRE-FX Technical Documentation - DataSHIELD Implementation**](https://doi.org/10.5281/zenodo.10375984).  
+_Zenodo_
+<https://doi.org/10.5281/zenodo.10375984>
+
+
+
 Stian Soiland-Reyes, Stuart Wheater (2023):  
 [**Five Safes RO-Crate profile**](https://w3id.org/5s-crate/0.4), version 0.4.  
 _TRE-FX Candidate Recommendation_