On subprojectivity and superprojectivity of Banach spaces
  We obtain some results for and further examples of subprojective and superprojective Banach spaces. We also give several conditions providing examples of non-reflexive superprojective spaces; one of these conditions is stable under $c_0$-sums and projective tensor products. 
El\'oi M. Galego, Manuel Gonz\'alez and Javier Pello
math.FA