Soyoung Lee, Yujin Ahn, Arunanand Prabu and Kapjin Kim . (2013). Piezoelectric Polymer and Piezocapacitive Nanoweb Based Sensors for Monitoring Vital Signals and Energy Expenditure in Smart Textiles.
            <i>Journal of Fiber Bioengineering and Informatics</i>. <i>6</i> (4).
            369-381.
         doi:10.3993/jfbi12201303