@article{DAN_1960_131_4_a3,
     author = {D. F. Davidenko},
     title = {The evaluation of determinants by the method of variation of parameters},
     journal = {Doklady Akademii Nauk},
     pages = {731--734},
     publisher = {mathdoc},
     volume = {131},
     number = {4},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_131_4_a3/}
}