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# CITATION.cff file created with {cffr} R package
# See also: https://docs.ropensci.org/cffr/
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cff-version: 1.2.0
message: 'To cite package "ivreg2r" in publications use:'
type: software
license: GPL-3.0-only
title: 'ivreg2r: Extended Instrumental Variables Estimation with Diagnostics'
version: 0.1.0.9000
identifiers:
- type: doi
  value: 10.32614/CRAN.package.ivreg2r
abstract: Comprehensive instrumental variables and generalized method of moments (GMM)
  estimation with automatic diagnostics, inspired by the 'Stata' command 'ivreg2'
  of Baum, Schaffer, and Stillman (2003) <https://doi.org/10.1177/1536867X0300300101>
  and Baum, Schaffer, and Stillman (2007) <https://doi.org/10.1177/1536867X0800700402>.
  Supports two-stage least squares (2SLS), limited information maximum likelihood
  (LIML), Fuller, k-class, two-step efficient GMM, and continuously updated (CUE)
  estimators. Provides classical, robust, cluster-robust, heteroskedasticity- and
  autocorrelation-consistent (HAC), and Driscoll-Kraay standard errors. Reports weak
  identification, underidentification, overidentification, and endogeneity tests at
  estimation time. All outputs are verified against 'Stata' within tight numerical
  tolerances.
authors:
- family-names: DiTraglia
  given-names: Francis
  email: francis.ditraglia@economics.ox.ac.uk
preferred-citation:
  type: manual
  title: 'ivreg2r: Extended Instrumental Variables Estimation with Diagnostics'
  authors:
  - family-names: DiTraglia
    given-names: Francis
    email: francis.ditraglia@economics.ox.ac.uk
  year: '2026'
  notes: R package
  url: https://github.com/restatr/ivreg2r
repository: https://restatr.r-universe.dev
repository-code: https://github.com/restatr/ivreg2r
commit: 3917a2b6b4c01388a3b8e88e3718af05a7738663
url: https://restatr.com/ivreg2r/
date-released: '2026-07-21'
contact:
- family-names: DiTraglia
  given-names: Francis
  email: francis.ditraglia@economics.ox.ac.uk
references:
- type: article
  title: 'Instrumental Variables and GMM: Estimation and Testing'
  authors:
  - family-names: Baum
    given-names: Christopher F.
  - family-names: Schaffer
    given-names: Mark E.
  - family-names: Stillman
    given-names: Steven
  journal: The Stata Journal
  year: '2003'
  volume: '3'
  issue: '1'
  doi: 10.1177/1536867X0300300101
  start: '1'
  end: '31'
- type: article
  title: Enhanced Routines for Instrumental Variables/Generalized Method of Moments
    Estimation and Testing
  authors:
  - family-names: Baum
    given-names: Christopher F.
  - family-names: Schaffer
    given-names: Mark E.
  - family-names: Stillman
    given-names: Steven
  journal: The Stata Journal
  year: '2007'
  volume: '7'
  issue: '4'
  doi: 10.1177/1536867X0800700402
  start: '465'
  end: '506'