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). Selection into Identification in Fixed Effects Models, with Application to Head Start. Retrieved May 24, 2026, from https://4ort.xyz/entity/selection-into-identification-in-fixed-effects-models-with-application-to-head-start
MLA“Selection into Identification in Fixed Effects Models, with Application to Head Start.” 4ort.xyz Knowledge Graph, 4ort.xyz, 24 May. 2026, https://4ort.xyz/entity/selection-into-identification-in-fixed-effects-models-with-application-to-head-start.
BibTeX@misc{4ortxyz_selection-into-identification-in-fixed-effects-models-with-application-to-head-start_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Selection into Identification in Fixed Effects Models, with Application to Head Start}}, year = {2026}, url = {https://4ort.xyz/entity/selection-into-identification-in-fixed-effects-models-with-application-to-head-start}, note = {Accessed: 2026-05-24}}
LLM promptAccording to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Selection into Identification in Fixed Effects Models, with Application to Head Start — https://4ort.xyz/entity/selection-into-identification-in-fixed-effects-models-with-application-to-head-start (retrieved 2026-05-24)
