1.0 solar/Yeon Soo Jung, Dea Han Jeong, Sung Bum Kang, Fredrick Kim, Myeong Hoon Jeong, Ki-Suk Lee, Jae Sung Son, Jeong Min Baik, Jin-Sang Kim, Kyoung Jin Choi. Wearable solar thermoelectric generator driven by unprecedentedly high temperature difference. Nano Energy, 2017; DOI: 10.1016/j.nanoen.2017.08.061
2.0 Fgure 1/ http://www.onalytica.com/wp-content/uploads/2015/02/old%20media/pie_brands_SoV_1200x1200.jpg
3.0 fig 2/ in shoe review for all in my doc ref 15
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