diff --git a/.gitignore b/.gitignore
index 20145fd..65d95c9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 .DS_Store
 .jekyll-cache/*
+_site/*
\ No newline at end of file
diff --git a/about.md b/about.md
index fba2338..1f51dac 100644
--- a/about.md
+++ b/about.md
@@ -51,7 +51,7 @@ aside:
 
 ## Publications
 
-- **EDDL: A Distributed Deep Learning System for Resource-limited Edge Computing Environment.**  
+- **[EDDL: A Distributed Deep Learning System for Resource-limited Edge Computing Environment](/static/2021-12/eddl-sec21.pdf)** **[[slide]()]**
 **Pengzhan Hao**, and Yifan Zhang
 The Sixth ACM/IEEE Symposium on Edge Computing (**ACM/IEEE SEC**)  
 San Jose, CA, USA, 2021.  
diff --git a/static/2021-12/eddl-sec21.pdf b/static/2021-12/eddl-sec21.pdf
new file mode 100644
index 0000000..7977f55
Binary files /dev/null and b/static/2021-12/eddl-sec21.pdf differ