@article{SM_2003_194_8_a0,
     author = {N. V. Artamonov},
     title = {Estimates of solutions of certain  classes of  second-order differential
},
     journal = {Sbornik. Mathematics},
     pages = {1113--1123},
     publisher = {mathdoc},
     volume = {194},
     number = {8},
     year = {2003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2003_194_8_a0/}
}