@article{MG-2022-AOM,
	doi = {10.1002/adom.202200240},
	year = {2022},
	journal = {Advanced Optical Materials}
	volume = {10},
	number = {14},
	pages = {2200240},
	author = {Beatriz Mart\'{\i}n-Garc\'{\i}a and Davide Spirito and Miao-Ling Lin and Yu-Chen Leng and Sergey Artyukhin and Ping-Heng Tan and Roman Krahne},
	title = {Low-Frequency Phonon Modes in Layered Silver-Bismuth Double Perovskites: Symmetry, Polarity, and Relation to Phase Transitions}}