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  year      = {1992},
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}

@article{AmbrosioStraTrevisan2019,
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@article{EvansGangbo1999,
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@article{Fang2019,
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@article{DRS2024,
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@misc{WangYan2010,
  author       = {Wang, Feng-Yu and Yan, Lixin},
  title        = {Gradient Estimate on the {Neumann} Semigroup and Applications},
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}

@article{CIL1992,
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}