On Generation of the Group $PSL_n(\mathbb Z+i\mathbb Z)$ by Three Involutions, Two of Which Commute

It is proved that the projective special linear group $PSL_n(\mathbb Z+i\mathbb Z)$, $n\geqslant8,$ over Gaussian integers $\mathbb Z+i\mathbb Z$ is generated by three involutions, two of which commute.