Update README.md

README.md

@@ -9,7 +9,7 @@ Backdoor attacks are emerging yet critical threats in the training process of de
 
 [BackdoorBox](https://www.researchgate.net/publication/359439455_BackdoorBox_A_Python_Toolbox_for_Backdoor_Learning) is an open-sourced Python toolbox, aiming to implement representative and advanced backdoor attacks and defenses under a unified framework that can be used in a flexible manner. We will keep updating this toolbox to track the latest backdoor attacks and defenses. 
 
-Currently, this toolbox is still under development (but the attack parts are almost done) and there is no user manual yet. However, **users can easily implement our provided methods by referring to the `tests` sub-folder to see the example codes of each implemented method**. In particular, you are always welcome to contribute your backdoor attacks or defenses by pull requests!
+Currently, this toolbox is still under development (but the attack parts are almost done) and there is no user manual yet. However, **users can easily implement our provided methods by referring to the `tests` sub-folder to see the example codes of each implemented method**. Please refer to [our paper](https://www.researchgate.net/publication/359439455_BackdoorBox_A_Python_Toolbox_for_Backdoor_Learning) for more details! In particular, you are always welcome to contribute your backdoor attacks or defenses by pull requests!
 
 
 ## Toolbox Characteristics