@article{MM_2017_29_5_a7,
     author = {M. V. Popov and Yu. A. Poveschenko and V. A. Gasilov and A. V. Koldoba and T. S. Poveschenko},
     title = {Application of the {Richardson} method in case of the unknown lower bound of a problem spectrum},
     journal = {Matemati\v{c}eskoe modelirovanie},
     pages = {96--108},
     publisher = {mathdoc},
     volume = {29},
     number = {5},
     year = {2017},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MM_2017_29_5_a7/}
}