@article{DAN_1972_204_2_a16,
     author = {P. A. Stoyanov and V. V. Moseev},
     title = {Resolving power of the electron microscope with single field condenser {\textendash} objective},
     journal = {Doklady Akademii Nauk},
     pages = {320--321},
     year = {1972},
     volume = {204},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1972_204_2_a16/}
}