Aydogdu, Ismail. 2019. “Codes over $\mathbb{Z}_{p}[u] {\langle u^r \rangle}\times\mathbb{Z}_{p}[u] {\langle u^s \rangle}$”. Journal of Algebra Combinatorics Discrete Structures and Applications 6 (1):39-51. https://doi.org/10.13069/jacodesmath.514339.