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Habibi Vosta Kolaei, M.J. and Azami, S. 2024. Conformal bounds for the first eigenvalue of the $\left(p,q\right)$-Laplacian system. Tamkang Journal of Mathematics. 55, 4 (Nov. 2024), 371–389. DOI:https://doi.org/10.5556/j.tkjm.55.2024.5188.