Résumé:
Let  p(f) and  p(f) denote respectively the iterated p-order and the
iterated p-type of an entire function f. In this paper, we study the iterated order and
the fixed points of some differential polynomials generated by solutions of the differential
equation
f′′ + A1(z)f′ + A0(z)f = 0,
where A1(z), A0(z) are entire functions of finite iterated p-order such that  p(A1) =
 p(A0) =   (0 <   < +1) and  p(A1) <  p(A0) =   (0 <   < +1).