@article{IVM_2016_1_a7,
     author = {I. V. Konnov},
     title = {A method of bi-coordinate variations with tolerances and its convergence},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {80--85},
     year = {2016},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2016_1_a7/}
}