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Heun functions and diagonals of rational functions (unabridged version). (arXiv:1910.10761v1 [math-ph]) http://arxiv.org/abs/1910.10761
Heun functions and diagonals of rational functions (unabridged version). (arXiv:1910.10761v1 [math-ph]) http://arxiv.org/abs/1910.10761