@article{DAN_1989_309_1_a4,
     author = {V. I. Zubov},
     title = {Equations of energy transformation},
     journal = {Doklady Akademii Nauk},
     pages = {28--30},
     publisher = {mathdoc},
     volume = {309},
     number = {1},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1989_309_1_a4/}
}