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Figure 16
The crystal structures of polytypes (a) I and (b) II of DSEM (4) viewed down [010]. Color codes and symbols as in Fig. 7[link]. H atoms have been omitted for clarity. The An layers are indicated to the right by brackets.

IUCrJ
Volume 2| Part 5| September 2015| Pages 584-600
ISSN: 2052-2525
https://doi.org/10.1107/S2052252515011665