@article{DAN_1977_233_2_a2,
     author = {A. P. Ershov},
     title = {A theoretical principle of system programming},
     journal = {Doklady Akademii Nauk},
     pages = {272--275},
     publisher = {mathdoc},
     volume = {233},
     number = {2},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1977_233_2_a2/}
}