  This paper is related to an inverse problem for a class of Dirac operators
with discontinuous coefficient and eigenvalue parameter contained in boundary
conditions. The asymptotic formula of eigenvalues of this problem is examined.
The theorem on completeness of eigenfunctions is proved. The expansion formula
with respect to eigenfunctions is obtained and Parseval equality is given. Weyl
solution and Weyl function are constructed. Uniqueness theorem of the inverse
problem respect to the Weyl function is proved.
