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T. M. Antonova and R. I. Dmytryshyn, “Truncation error bounds for branched continued fraction $\sum_{i_1=1}^N\frac{a_{i(1)}}{1}{\atop+}\sum_{i_2=1}^{i_1}\frac{a_{i(2)}}{1}{\atop+}\sum_{i_3=1}^{i_2}\frac{a_{i(3)}}{1}{\atop+}\ldots$”, Ukr. Mat. Zhurn., vol. 72, no. 7, pp. 877-885, Jul. 2020.