Farrukh M. Makhamadiyev and Laziz S. Baratov (2026) “Study of methods for assessing the efficiency of photovoltaic modules and devices”, PROBLEMS OF ENERGY AND SOURCES SAVING, 2(2), pp. 180–186. Available at: https://energy.tdtu.uz/index.php/journal/article/view/400 (Accessed: 28 October 2026).