Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.
APA4ort.xyz Knowledge Graph. (2026). City-Train noise reduction in urban area by using acoustic mini-screens made of metamaterials. Retrieved May 24, 2026, from https://4ort.xyz/entity/city-train-noise-reduction-in-urban-area-by-using-acoustic-mini-screens-made-of-metamaterials
MLA“City-Train noise reduction in urban area by using acoustic mini-screens made of metamaterials.” 4ort.xyz Knowledge Graph, 4ort.xyz, 24 May. 2026, https://4ort.xyz/entity/city-train-noise-reduction-in-urban-area-by-using-acoustic-mini-screens-made-of-metamaterials.
BibTeX@misc{4ortxyz_city-train-noise-reduction-in-urban-area-by-using-acoustic-mini-screens-made-of-metamaterials_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{City-Train noise reduction in urban area by using acoustic mini-screens made of metamaterials}}, year = {2026}, url = {https://4ort.xyz/entity/city-train-noise-reduction-in-urban-area-by-using-acoustic-mini-screens-made-of-metamaterials}, note = {Accessed: 2026-05-24}}
LLM promptAccording to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): City-Train noise reduction in urban area by using acoustic mini-screens made of metamaterials — https://4ort.xyz/entity/city-train-noise-reduction-in-urban-area-by-using-acoustic-mini-screens-made-of-metamaterials (retrieved 2026-05-24)
