Saturated extensions, the attractors method and Hereditarily James Tree   Space
  In the present work we provide a variety of examples of HI Banach spaces containing no reflexive subspace and we study the structure of their duals as well as the spaces of their linear bounded operators. Our approach is based on saturated extensions of ground sets and the method of attractors. 
Spiros A. Argyros, Alexander D. Arvanitakis, Andreas G. Tolias