Kalybay, A. and Karatayeva, D. 2022. Oscillation and nonoscillation criteria for a half-linear difference equation of the second order and extended discrete Hardy inequality. Український математичний журнал. 74, 1 (Jan. 2022), 45–60. DOI:https://doi.org/10.37863/umzh.v74i1.2298.