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). Two robust tools for inference about causal effects with invalid instruments. Retrieved May 24, 2026, from https://4ort.xyz/entity/two-robust-tools-for-inference-about-causal-effects-with-invalid-instruments
MLA“Two robust tools for inference about causal effects with invalid instruments.” 4ort.xyz Knowledge Graph, 4ort.xyz, 24 May. 2026, https://4ort.xyz/entity/two-robust-tools-for-inference-about-causal-effects-with-invalid-instruments.
BibTeX@misc{4ortxyz_two-robust-tools-for-inference-about-causal-effects-with-invalid-instruments_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Two robust tools for inference about causal effects with invalid instruments}}, year = {2026}, url = {https://4ort.xyz/entity/two-robust-tools-for-inference-about-causal-effects-with-invalid-instruments}, note = {Accessed: 2026-05-24}}
LLM promptAccording to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Two robust tools for inference about causal effects with invalid instruments — https://4ort.xyz/entity/two-robust-tools-for-inference-about-causal-effects-with-invalid-instruments (retrieved 2026-05-24)