Partial indices of a matrix Riemann problem on the torus
English version (Springer): Ukrainian Mathematical Journal 36 (1984), no. 2, pp 225-230.
Citation Example: Dmitrieva I. Yu., Kruglov V. E. Partial indices of a matrix Riemann problem on the torus // Ukr. Mat. Zh. - 1984. - 36, № 2. - pp. 247 - 252.
Full text