Gutsul, I. V., and V. I. Gutsul. “Non-Stationary Temperature Distribution and Thermoelectromotive Force for Optical Thermoelement at Anti-Parallel Directions of Temperature Gradient and Ray Current”. Physics and Chemistry of Solid State, vol. 16, no. 1, Mar. 2015, pp. 14-19, doi:10.15330/pcss.16.1.14-19.