Edwards PET, Parsons GR, Myers KH. The economic value of viewing migratory shorebirds on the Delaware Bay: an application of the single-site travel cost model using on-site data. Hum Dimens Wildl. 2011;16(6):435-44. doi: 10.1080/10871209.2011.608180
Talmud PJ, Hawe E, Miller GJ. Analysis of gene-environment interaction in coronary artery disease: lipoprotein lipase and smoking as examples. J Cardiovasc Med. 2002;3(1):6-9 Revie.
McKenna SP, Whalley D, Doward LC. Which outcomes are important in schizophrenia? Int J Methods Psychiatr Res. 2000;9(1):S58-67.