1. Kobak D. Excess mortality reveals Covid’s true toll in Russia. Significance. 2021;18:16–9.
2. Gamio L, Glanz J. Just how big could India’s true covid toll be?, New York Times. 2021. https://www.nytimes.com/interactive/2021/05/25/world/asia/india-covid-death-estimates.html.
3. Cox DR, Donnelly CA. Principles of applied statistics. Cambridge: Cambridge University Press; 2011.
4. Deming WE. Quality, productivity and the competitive position. Cambridge: Massachusetts Institute of Technology, Center for Advanced Engineering Study; 1982.
5. Hahn G. The embedded statistician, Youden address: 47th annual fall technical conference, ASQ statistics division newsletter, vol. 22, no. 1; 2003. p. 8–17. https://asq.org/statistics/design-of-experiments/the-embedded-statistician.pdf.