Vasarevičius, Dominykas, and Modestas Pikutis. “Development of Mathematical Models for Investigating Maximal Power Point Tracking Algorithms”. Mokslas – Lietuvos Ateitis Science – Future of Lithuania, vol. 4, no. 1, Apr. 2012, pp. 51-55, https://doi.org/10.3846/mla.2012.12.