Niska, M., K. Prakash, A. Siukola, H. Kosonen, J. Luomanen, K. Lumme-Sandt, S. Neupane, P. Nikander, and C.-H. Nygård. “Evaluation of Lifelong Work Satisfaction Among Former Postal Service Workers”. Nordic Journal of Working Life Studies, vol. 10, no. 1, Feb. 2020, doi:10.18291/njwls.v10i1.118677.