@article{DAN_1989_308_4_a20,
     author = {N. L. Grigorov},
     title = {The share of protons in cosmic ray flux at the energies $\gtrsim25$ {TeV}},
     journal = {Doklady Akademii Nauk},
     pages = {850--853},
     publisher = {mathdoc},
     volume = {308},
     number = {4},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1989_308_4_a20/}
}