\(ACL\) and differentiability of open discrete ring \((p, Q)\)-mappings

We study the so-called \((p, Q)\)-mappings which naturally generalize quasiregular mappings. It is proved that open discrete ring \((p, Q)\)-mappings are differentiable almost everywhere as \(p > n - 1\) and locally integrable \(Q\). Furthermore, we prove that open discrete \((p, Q)\)-mappings belong to the class \(ACL\) in \(\mathbb{R}^n\) and \(f \in W_{\text{loc}}^{1,1}\) the same conditions on \(p\) and \(Q\).