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Staggered Difference-in-Difference - What is different?
Difference-in-Differences Estimation - Mingze Gao
Stacked Difference-in-Differences | NBER
Staggered DiD versus traditional DiD - What is different?
How much should we trust staggered difference-in ... - ScienceDirect
How Much Should We Trust Staggered Difference-In
交叠的秘密 (The Secret Behind Staggered: A Primer to Staggered DID …