%0 Journal Article %A Alexander A. Shlapunov %T Boundary problems for Helmholtz equation and the Cauchy problem for Dirac operators %J Žurnal Sibirskogo federalʹnogo universiteta. Matematika i fizika %D 2011 %P 217-228 %V 4 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/JSFU_2011_4_2_a9/ %G en %F JSFU_2011_4_2_a9