@article{PFMT_2015_2_a0,
     author = {V. N. Kapshai and Yu. A. Grishechkin},
     title = {Relativistic scattering $s$-states problem for superposition of two potentials {\guillemotleft}$\delta$-sphere{\guillemotright} type},
     journal = {Problemy fiziki, matematiki i tehniki},
     pages = {7--12},
     publisher = {mathdoc},
     number = {2},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PFMT_2015_2_a0/}
}