“…In the p-adic case, the local Gan-Gross-Prasad conjecture has been solved by J.-L. Waldspurger and C. Moeglin and J.-L. Waldspurger [MW,Wal1,Wal2,Wal3] for orthogonal groups, by R. Beuzart-Plessis [BP1,BP2] for Bessel models for unitary groups and W. T. Gan and A. Ichino [GI] for Fourier-Jacobi models for unitary groups, and by H. Atobe [Ato] for symplectic-metaplectic groups. In the finite field case, the Gan-Gross-Prasad problem for finite classical groups has been studied by D. Liu and Z. Wang, and Z. Wang in [LW1, LW2,LW3,Wang1,Wang2].…”