Yao, Ting, et al. “Skew Cyclic Codes over $\mathbb{F}_{q}+u\mathbb{F}_{q}+v\mathbb{F}_{q}+uv\mathbb{F}_{q}$”. Journal of Algebra Combinatorics Discrete Structures and Applications, vol. 2, no. 3, Sept. 2015, pp. 163-8, https://jacodesmath.com/index.php/jacodesmath/article/view/20.