Morant SV, Gnanasakthy A. A new approach to the mathematical formulation of lactation curves. Anim Prod Sci. 1989 Oct;49(2):151-62.
Suit HD, Sedlacek R, Fagundes L, Goitein M, Rothman KJ. Time distribution of recurrences of an immunogenic and non-immunogenic tumor following local irradiation. Radiat Res. 1978 Feb;73(2):251-66.