@article{AA_2014_26_1_a4,
     author = {B. A. Plamenevskii and A. S. Poretckii and O. V. Sarafanov},
     title = {Method for computing waveguide scattering matrices in vicinity of thresholds},
     journal = {Algebra i analiz},
     pages = {128--164},
     publisher = {mathdoc},
     volume = {26},
     number = {1},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_2014_26_1_a4/}
}