Muth MK, Zhen C, Taylor J, Cates S, Kosa K, Zorn D, Choiniere C. The value to consumers of health labeling statements on breakfast foods and cereals. Journal of food products marketing. 2013 Jul;19(4):279-98. doi: 10.1080/10454446.2013.724372
Parsley (Edwards) TL. Review of the phantom respondents: opinion surveys and political representation. J Off Stat. 1994;10(3):351-5.