On neighborhood and partial sums problem for generalized Sakaguchi type   functions
  In the present investigation, we introduce a new class k-US_{s}^{{\eta}}({\lambda},{\mu},{\gamma},t) of analytic functions in the open unit disc U with negative coefficients. The object of the present paper is to determine coefficient estimates, neighborhoods and partial sums for functions f(z) belonging to this class. 
Murat \c{C}a\u{g}lar and Halit Orhan
math.CV