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Figure 4
Variation of the unit-cell volumes of pyridine-d5 phases II (open circles) and III (closed circles) with pressure, fitted to the third-order Birch–Murnaghan equation of state.

IUCrJ
Volume 7| Part 1| January 2020| Pages 58-70
ISSN: 2052-2525
https://doi.org/10.1107/S2052252519015616