Dogan, A. “Positive Solutions of a Three-Point Boundary-Value Problem for $\mathcal {p}$-Laplacian Dynamic Equation on Time Scales”. Ukrains’kyi Matematychnyi Zhurnal, vol. 72, no. 6, June 2020, pp. 790-05, https://doi.org/10.37863/umzh.v72i6.646.