“…The presented results are new even for linear equations of the type defined by Equation 1, and in the case when p n ≡ 0. The first part of the proof of Theorem 1, based on the summation method and the use of discrete Bihari type lemma, is in principle standard (see [27,28,32,33]). The second part of the proof required a new approach with the use of Lemma 3.…”