Update README.md

README.md

@@ -50,12 +50,12 @@ If you want to contact us & join us, you can  ✉️  to our team : <opendilab@p
 | Algo.\Env.   | [CartPole](https://di-engine-docs.readthedocs.io/en/latest/13_envs/cartpole.html) | [LunarLander](https://di-engine-docs.readthedocs.io/en/latest/13_envs/lunarlander.html) | [LunarLanderContinuous](https://di-engine-docs.readthedocs.io/en/latest/13_envs/lunarlander.html) | [Pendulum](https://di-engine-docs.readthedocs.io/en/latest/13_envs/pendulum.html) | [Pong](https://di-engine-docs.readthedocs.io/en/latest/13_envs/atari.html) | [Breakout](https://di-engine-docs.readthedocs.io/en/latest/13_envs/atari.html) | [MsPacman](https://di-engine-docs.readthedocs.io/en/latest/13_envs/atari.html) | []() | []() | []() |
 | :-------------: | :-------------: | :-------------: | :------------------------: | :------------: | :--------------: | :------------: | :------------------: | :---------: | :---------: | :---------: |
 | [AlphaZero](https://www.science.org/doi/10.1126/science.aar6404) |  |  |  |  |  |  |  |  |  |  |
-| [Sampled AlphaZero]() |  |  |  |  |  |  |  |  |  |  |
+| [Sampled AlphaZero](https://www.science.org/doi/10.1126/science.aar6404) |  |  |  |  |  |  |  |  |  |  |
 | [Muzero](https://arxiv.org/abs/1911.08265) | [✅](https://huggingface.co/OpenDILabCommunity/CartPole-v0-MuZero) |  |  |  | [✅](https://huggingface.co/OpenDILabCommunity/PongNoFrameskip-v4-MuZero) |  | [✅](https://huggingface.co/OpenDILabCommunity/MsPacmanNoFrameskip-v4-MuZero) |  |  |  |
 | [EfficientZero](https://arxiv.org/abs/2111.00210) |  |  |  |  |  |  |  |  |  |  |
 | [Gumbel MuZero](https://openreview.net/pdf?id=bERaNdoegnO&) |  |  |  |  |  |  |  |  |  |  |
-| [Sampled EfficientZero]() |  |  |  |  |  |  |  |  |  |  |
-| [Stochastic MuZero]() |  |  |  |  |  |  |  |  |  |  |
+| [Sampled EfficientZero](https://arxiv.org/abs/2104.06303) |  |  |  |  |  |  |  |  |  |  |
+| [Stochastic MuZero](https://openreview.net/pdf?id=X6D9bAHhBQ1) |  |  |  |  |  |  |  |  |  |  |
 
 </details>