@article{IIGUM_2014_8_a5,
     author = {V. I. Gurman and I. V. Rasina and O. V. Fesko and O. V. Usenko},
     title = {An {Improvement} {Method} for {Hierarchical} {Model} with {Network} {Structure}},
     journal = {The Bulletin of Irkutsk State University. Series Mathematics},
     pages = {71--85},
     year = {2014},
     volume = {8},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IIGUM_2014_8_a5/}
}