Update README.md

README.md

@@ -22,8 +22,8 @@ Nevertheless, on Monday December 4, 2023, the announcement of Mamba by [Albert G
 A good opportunity for me to write a few words about the developments in SSM over the last two years.  
 
 I plan to write three articles first, where the aim is to illustrate the basics of SSM with S4 (the "Attention is all you need" of the field) before doing a literature review of the evolution of SSM since that first paper:  
-- [Introduction to SSM and S4](https://huggingface.co/blog/lbourdois/introduction-ssm)
-- [SSM evolutions in 2022](WIP) (WIP)
+- [Introduction to SSM and S4](https://huggingface.co/blog/lbourdois/get-on-the-ssm-train)
+- [SSM evolutions in 2022](https://huggingface.co/blog/lbourdois/ssm-2022)
 - [SSM developments in 2023](WIP) (WIP)
   
 I also hope in a second time to go into the details of the architectures of some specific SSMs with animations ✨