%0 Journal Article %A G. Yu. Vinogradova %A V. M. Deundyak %T On the index and homotopic classification of families of singular operators with a~dihedral shift group and $PC$-coefficients %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 2002 %P 71-74 %N 11 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_2002_11_a9/ %G ru %F IVM_2002_11_a9