Twistor spaces of non-flat Bochner-K\"ahler manifolds
  For the twistor spaces of the Bochner-K\"ahler manifold $M = H^l \times P^n$, systems of holomorphic coordinates are constructed. As an application of them, an explicit description of the moduli space of relative deformations of fibers of $M$'s twistor space is given. 
Yoshinari Inoue