@ARTICLE{26583204_26655629_2008, author = {D. Ignatov and S. Kuznetsov and V. Lopatnikova and I. Selitskiy}, keywords = {}, title = {}, journal = {}, year = {2008}, number = {4}, pages = {21-28}, url = {https://bijournal.hse.ru/en/2008--4/26655629.html}, publisher = {}, abstract = {}, annote = {} }