1. Alho, J. M., & Spencer, B. D. (2005). Statistical demography and forecasting. New York: Springer Science+Business Media.
2. Alkema, L., Raftery, A. E., Gerland, P., Clark, S. J., Pelletier, F., Büttner, T., & Heilig, G. K. (2011). Probabilistic projections of the Total fertility rate for all countries. Demography, 48(3), 815–839.
3. Aust, S., Bewarder, M., Büscher, W., Lutz, M., & Malzahn, C.C. (2015). Herbst der Kanzlerin. Geschichte eines Staatsversagens. [Autumn of the chancellor. History of a state failure.] Welt. https://www.welt.de/politik/deutschland/article148588383/Herbst-der-Kanzlerin-Geschichte-eines-Staatsversagens.html. Accessed 5 Mar 2019.
4. Azose, J. J., & Raftery, A. E. (2015). Bayesian probabilistic projection of international migration. Demography, 52(5), 1627–1650.
5. Azose, J. J., Ševčíková, H., & Raftery, A. E. (2016). Probabilistic population projections with migration uncertainty. Proceedings of the National Academy of Sciences of the United States of America, 113(23), 6460–6465.