Quantum superalgebras suqβ(mβ£n) are studied in the framework of
R-matrix formalism. Explicit parametrization of L(+) and L(β)
matrices in terms of suqβ(mβ£n) generators are presented. We also show
that quantum deformation of nonsimple superalgebra su(nβ£n) requires its
extension to u(nβ£n).Comment: 14 page