Disambiguation evidence for Painlevé–Gullstrand coordinates via surface form

"ingoing Painlevé–Gullstrand coordinates"

Triples (1)

Triples where some other subject referred to this entity as "ingoing Painlevé–Gullstrand coordinates".

Painlevé–Gullstrand coordinates → hasVariant →
"ingoing Painlevé–Gullstrand coordinates"
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