Pseudo-parallel Lagrangian submanifolds are semi-parallel
  We prove a conjecture formulated by Pablo M. Chacon and Guillermo A. Lobos in [Pseudo-parallel Lagrangian submanifolds in complex space forms, Differential Geom. Appl.] stating that every Lagrangian pseudo-parallel submanifold of a complex space form of dimension at least 3 is semi-parallel. 
F. Dillen, J. Van der Veken, L. Vrancken