Butkus, M., Dargenytė-Kacilevičienė, L., Matuzevičiūtė, K., Ruplienė, D. and Šeputienė, J. 2024. Simultaneous, endogenous, and bi-directional relationship between output, labour productivity, and employment: a 3SLS estimation of the employment version of Okun equation. Journal of Business Economics and Management. 25, 5 (Oct. 2024), 1030–1051. DOI:https://doi.org/10.3846/jbem.2024.22425.