Bell T, Hill N, Mogle J, Sweeder L, Bhargava S. Longitudinal evaluation of perceived stress and memory complaints in the Einstein Aging Study. Anxiety Stress Copin. 2021 Jan;34(1):37-50. doi: 10.1080/10615806.2020.1836621
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