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@article{MZM_1984_35_2_a4, author = {V. E. Kruglov}, title = {Structure of the partial indices of the {Riemann} problem with permutation-type matrices}, journal = {Matemati\v{c}eskie zametki}, pages = {169--175}, publisher = {mathdoc}, volume = {35}, number = {2}, year = {1984}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1984_35_2_a4/} }
V. E. Kruglov. Structure of the partial indices of the Riemann problem with permutation-type matrices. Matematičeskie zametki, Tome 35 (1984) no. 2, pp. 169-175. http://geodesic.mathdoc.fr/item/MZM_1984_35_2_a4/