# <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">P</mml:mi><mml:mprescripts/><mml:none/><mml:mn>31</mml:mn></mml:mmultiscripts></mml:math> NMR study of discrete time-crystalline signatures in an ordered crystal of ammonium dihydrogen phosphate

> Research article (Physical review. B./Physical review. B, 2018) · cited 86× · AI/ML

**Wikidata**: [openalex:W2787833584](https://www.wikidata.org/wiki/openalex:W2787833584)  
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