A unified test for regression discontinuity designs (with T. Ishihara and M. Sawada), Journal of Econometrics, 251, 2025. [Link] [R package] arXiv:2205.04345
Identification of multi-valued treatment effects with unobserved heterogeneity, Journal of Econometrics, 238, 2024. [Link] arXiv:2010.04385
Identification and estimation of treatment effects in a linear factor model with fixed number of time periods (with T. Ishihara), arXiv:2503.21763.