Tkatch R, Bazarko D, Musich S, Wu L, MacLeod S, Keown K, Hawkins K, Wicker E. A pilot online mindfulness intervention to decrease caregiver burden and improve psychological well-being. J Evid Based Complementary Altern Med. 2017 Oct;22(4):736-43. doi: 10.1177/2156587217737204
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