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@@ -271,6 +271,7 @@ Note this table is referenced from [here](https://github.com/LoSealL/VideoSuperR
 | DIN        | [IJCAI-PRICAI 2020](https://arxiv.org/pdf/2004.11814.pdf)            |   | SISR，asymmetric co-attention           |
 | PANet        | [arxiv](https://arxiv.org/pdf/2004.13824.pdf)   |[PyTorch](https://github.com/SHI-Labs/Pyramid-Attention-Networks)   | Pyramid Attention        |
 | SRResCGAN        | [arxiv](https://arxiv.org/pdf/2005.00953.pdf)   |[PyTorch](https://github.com/RaoUmer/SRResCGAN)   |         |
+| ISRN        | [arxiv](https://arxiv.org/pdf/2005.09964.pdf)   |   | iterative optimization, feature normalization.     |
 
 ### Super Resolution workshop papers
 #### NTIRE17 [papers](http://openaccess.thecvf.com/CVPR2017_workshops/CVPR2017_W12.py)