Published in
Elsevier, Global Food Security, (26), p. 100383, 2020
DOI: 10.1016/j.gfs.2020.100383
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Instrumental variables and the claim of causality: Evidence from impact studies in maize systems
Journal article published in 2020 by
Christoph Kubitza 
,
Vijesh V. Krishna
,
Vijesh V. Krishna
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