1. Peter G. Peterson, Gray Dawn, Random House, 1999. The standard replacement birthrate figure 2.1 is good for developed countries only. This needs an upward revision for the developing countries, where the female mortality, especially at a young age, is high. Also discussed elsewhere in the book.
2. Demographers often differ on Chinese figures.
3. Normally the population is plotted in the abscissa and the age as the ordinate.
4. Charlotte Hohn, of the Federal Institute of Population Research, Wiesbaden, Germany, “Ageing and the Family in the Western Type Developed Countries”, in Proceedings of the UN Conference on Ageing Population in the Context of the Family, Kitakyushu, 1990.
6. Countries like India are now going slow ...