@article{DAN_1961_138_4_a21,
     author = {\`E. I. Adirovich and V. M. Fridkin},
     title = {Mutual substitution law and the quasistationary state of electronic processes in photoelectrets},
     journal = {Doklady Akademii Nauk},
     pages = {820--823},
     publisher = {mathdoc},
     volume = {138},
     number = {4},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_138_4_a21/}
}