@article{Meng:2022pT,
  author = "Meng, Yu",
  title = "{A new method for a lattice calculation of  $\eta_c\rightarrow 2\gamma$}",
  doi = "10.22323/1.396.0618",
  journal = "PoS",
  year = 2022,
  volume = "LATTICE2021",
  pages = "618"
}