@article{ZNSL_1990_185_a11,
     author = {O. A. Fidler},
     title = {Some conditions of the convergence {Gummel} method},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {146--159},
     publisher = {mathdoc},
     volume = {185},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1990_185_a11/}
}