%0 Journal Article %A M. M. Popov %T An addition to the work ``Diffraction loses of confocal resonator with mirrors of arbitrary shape'' %J Zapiski Nauchnykh Seminarov POMI %D 1975 %P 170-171 %V 51 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1975_51_a11/ %G ru %F ZNSL_1975_51_a11