@article{DAN_1977_237_2_a11,
     author = {L. Sh. Grigoryan and G. S. Sahakyan},
     title = {On the presence of $\pi^-$-mesons in heavy atomic nuclei},
     journal = {Doklady Akademii Nauk},
     pages = {299--302},
     publisher = {mathdoc},
     volume = {237},
     number = {2},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1977_237_2_a11/}
}