@article{DAN_1991_320_3_a12,
     author = {N. A. Bobylev and Yu. M. Burman and S. K. Korovin},
     title = {Error estimates for the harmonic balance method},
     journal = {Doklady Akademii Nauk},
     pages = {572--576},
     publisher = {mathdoc},
     volume = {320},
     number = {3},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1991_320_3_a12/}
}