Dickey H, Watson V, Zangelidis A. Is it all about money? An examination of the motives behind moonlighting. Appl Econ. 2010 Nov 3;43(26):3767-74. doi: 10.1080/00036841003724403
Strickland A, Brogan AJ, Krauss J, Martindale R, Cresci G. Is the use of specialized nutritional formulations a cost-effective strategy? A national database evaluation. J Parenter Enter Nutr. 2005 Jan 1;29(1 Suppl):S81-91.
Clarkson T, Anthony MS, Hughes C. Estrogenic soybean isoflavones and chronic disease: risks and benefits. Trends Endocrinol Metab. 1995 Jan;6(1):11-6.