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Conditional quasi-exact solvability of the quantum planar pendulum and of its anti-isospectral hyperbolic counterpart

Simon Becker, Marjan Mirahmadi, Burkhard Schmidt, Konrad Schatz and Bretislav Friedrich

Eur. Phys. J. D, 71 6 (2017) 149

DOI: https://doi.org/10.1140/epjd/e2017-80134-6

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