1. Euler, L.: Sur la multiplication du genre humain. Leonardi Euleri Opera omnia, Ser. I(7), 545–552 (1923)
2. Malthus, T.: An Essay on the Principle of Population, as it Affects the Future Improvement of Society with Remarks on the Speculations of Mr. Godwin, M. Condorcet, and Other Writers. London (1798)
3. Verhulst, P.F.: Notice sur la loi que la population poursuit dans son accroissement. Correspondance mathematique et physique 10, 113–121 (1838)
4. Fisher, R.A.: The wave of advance of advantageous genes. Ann. Eugenics. 7(4), 353–369 (1937)
5. Kolmogorov, A.N., Petrovskii, I.G., Piskunov, N.S.: A study of the diffusion equation with increase in the amount of substance, and its application to a biological problem. Bull. Moscow Univ. Math. Mech. 1(6), 333–358 (1937)