https://arxiv.org/abs/1811.04316 /Plateau Stein Manifolds/ Misha Gromov
https://arxiv.org/abs/1811.04332 /Hilbert Volume in Metric Spaces/ Misha Gromov
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https://arxiv.org/abs/1811.04332 /Hilbert Volume in Metric Spaces/ Misha Gromov