Hristov, N., Streblau, M. and Dimova, T. 2021. Online System for Monitoring and Analysis of the Operation of a Small Photovoltaic Plant. ANNUAL JOURNAL OF TECHNICAL UNIVERSITY OF VARNA, BULGARIA. 5, 1 (Jun. 2021), 76-85. DOI:https://doi.org/10.29114/ajtuv.vol5.iss1.228.