[2007.06188] Shota Kikuchi, Tatsuo Kobayashi, Hajime Otsuka et al.: Modular symmetry by orbifolding magnetized $T^2\times T^2$: realization of double cover of $Γ_N$ https://t.co/BYNyPTzr3I https://t.co/R8iYIZo3PT