Kim SG, Lee CY. Smooth bilinear forms of ${\mathcal L}(^2\mathbb{R}_{h(w_1, w_2)}^2)$ and ${\mathcal L}(^2\mathbb{R}_{h^{’}(w_1, w_2)}^2)$. MFAT. 2023;29(1-2):39-56. doi:https://doi.org/10.31392/MFAT-npu26_1--2.2023.04