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). Seismic monitoring of urban activity in Barcelona during the COVID-19 lockdown. Retrieved May 24, 2026, from https://4ort.xyz/entity/seismic-monitoring-of-urban-activity-in-barcelona-during-the-covid-19-lockdown
MLA“Seismic monitoring of urban activity in Barcelona during the COVID-19 lockdown.” 4ort.xyz Knowledge Graph, 4ort.xyz, 24 May. 2026, https://4ort.xyz/entity/seismic-monitoring-of-urban-activity-in-barcelona-during-the-covid-19-lockdown.
BibTeX@misc{4ortxyz_seismic-monitoring-of-urban-activity-in-barcelona-during-the-covid-19-lockdown_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Seismic monitoring of urban activity in Barcelona during the COVID-19 lockdown}}, year = {2026}, url = {https://4ort.xyz/entity/seismic-monitoring-of-urban-activity-in-barcelona-during-the-covid-19-lockdown}, note = {Accessed: 2026-05-24}}
LLM promptAccording to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Seismic monitoring of urban activity in Barcelona during the COVID-19 lockdown — https://4ort.xyz/entity/seismic-monitoring-of-urban-activity-in-barcelona-during-the-covid-19-lockdown (retrieved 2026-05-24)
