@article{DAN_1965_165_1_a16,
     author = {Yu. M. Vorona and V. N. Vertsner},
     title = {An electromagnetic lens with double focusing used to obtain electron diffraction micropatterns},
     journal = {Doklady Akademii Nauk},
     pages = {61--62},
     publisher = {mathdoc},
     volume = {165},
     number = {1},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1965_165_1_a16/}
}