Add new preprint by Zhang et al. (#116)

Author: sloede

index.md

@@ -120,8 +120,12 @@ listed above. Author names of Trixi.jl's main developers are in *italics*.
 
 ### 2026
 
+* Zhang, Redekop, Stoyanov, Farrell, Kim, Holleis, Gong, Keough, Choi, Taniguchi, Watanabe, Huber, Bleszynski Jayich, Lucas, Young,
+  **Imaging flat band electron hydrodynamics in biased bilayer graphene**, 2026.\\
+  [![arXiv:2603.11175](https://img.shields.io/badge/arXiv-2603.11175-yellow)](https://arxiv.org/abs/2603.11175)
+
 * Van Fleet, *Chan*,
-  **On the choice of viscous discontinuous Galerkin discretization for entropy correction artificial viscosity methods** 2026.\\
+  **On the choice of viscous discontinuous Galerkin discretization for entropy correction artificial viscosity methods**, 2026.\\
   [![arXiv:2602.23210](https://img.shields.io/badge/arXiv-2602.23210-yellow)](https://arxiv.org/abs/2602.23210)
 
 * Montoya, *Rueda-Ramírez*, *Gassner*,