@article{DAN_1979_247_1_a13,
     author = {U. K. Nigul},
     title = {Asymptotic description of the process of weak distortion of the longitudinal-wave shape in a nonlinear hereditary elastic medium},
     journal = {Doklady Akademii Nauk},
     pages = {60--63},
     publisher = {mathdoc},
     volume = {247},
     number = {1},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1979_247_1_a13/}
}