@article{IVM_2002_12_a6,
     author = {B. G. Gabdulkhaev},
     title = {Optimization of direct methods for solving periodic boundary value problems},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {55--65},
     publisher = {mathdoc},
     number = {12},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2002_12_a6/}
}