Mihaylov, N.,
Evtimov, A.,
Beloev, H., &
Pencheva, V.
().
To the issue of applying renewable energy sources in farms. // <I>Agricultural<D> engineering and post-harvest technology for Asia sustainability : Intern. workshop, Hanoi, Vietnam, 5-6 december 2013 : Proc. - Hanoi : Science and ethics publishing house, 2013, p. 117-125..