@article{ZNSL_2015_439_a4,
     author = {N. I. Gorbenko and V. P. Il'in},
     title = {The additive {Peaceman--Rachford} method},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {47--58},
     publisher = {mathdoc},
     volume = {439},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2015_439_a4/}
}