Three additional families of Lagrangian surfaces of constant curvature in complex projective plane

Three additional families of Lagrangian surfaces of constant curvature in complex projective plane CP2(4)CP2(4) shall be added to the list of Theorem 1 in my article [B.-Y. Chen, Classification of Lagrangian surfaces of constant curvature in complex projective planes, J. Geom. Phys. 53 (2005) 428–460].