Wang, Hongliang, Yinyin Xie, Xuejun Pei, Yong Kang, and Xiumei Yue. 2010. “A New Method of Power Arithmetic for Parallel Inverter”. Elektronika Ir Elektrotechnika 106 (10):3-8. https://eejournal.ktu.lt/index.php/elt/article/view/9106.