@article{VMP_2012_13_1_a19,
     author = {A. I. Erokhin},
     title = {Application of projection methods for studying the waveguide and resonance structures with singularities},
     journal = {Numerical methods and programming},
     pages = {192--196},
     publisher = {mathdoc},
     volume = {13},
     number = {1},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMP_2012_13_1_a19/}
}