@article{VMP_2015_16_4_a9,
     author = {G. G. Ryabov and V. A. Serov},
     title = {Composition of infinitary structures},
     journal = {Numerical methods and programming},
     pages = {557--565},
     publisher = {mathdoc},
     volume = {16},
     number = {4},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMP_2015_16_4_a9/}
}