Terziev, A.,
Iliev, I.,
Kamburova, V., &
Delchev, D.
().
Analysis of degradation factor of photovoltaic modules operating under field conditions. // <I>TE-RE-RD 2013<D> : 2nd intern. conf. "Thermal equipment, renewable energy and rural development", Baile Olanesti, Romania, 20-22 june, 2013, p. 113-118..