DePyssler B, Williams VSL, Windle M. Alcohol consumption and positive study practices among African American college students. J Alcohol Drug Educ. 2005 Dec 1;49(4):26-44.
Morant SV, Gnanasakthy A. A new approach to the mathematical formulation of lactation curves. Anim Prod Sci. 1989 Oct;49(2):151-62.