“$\left(1+\lambda Uvw \right) $-Constacyclic Codes over the Ring $\F_q[u,v,w] \langle u^2, v^2, w^2, Uv-Vu, Vw-Wv, Uw-Wu \rangle$”. Nonlinear Studies, vol. 24, no. 1, Feb. 2017, https://nonlinearstudies.com/index.php/nonlinear/article/view/1466.