TY  - BOOK
AU  - Leznov, A.N.
AU  - Savel''ev, M.V.
TI  - Representation of zero curvatyre for the system of nonlinear partial differential equations Xa, zz̄ = exp (kx)2 and its integrability
PY  - 1979///
CY  - Б. м.
ER  -