%0 Journal Article %A A. I. Erokhin %T Application of projection methods for studying the waveguide and resonance structures with singularities %J Numerical methods and programming %D 2012 %P 192-196 %V 13 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMP_2012_13_1_a19/ %G ru %F VMP_2012_13_1_a19