Objective Give the relation betwen the 2 major representations: Lamb's general solution multipole expansion of Oseen tensor Two references: S.Weinbaum, P.Ganatos, and Z-Y.Yan, Annu. Rev. Fluid Mech. (1990) 22, 275-316: the relation is given upto 2nd order (= FTS) K.S.Thorne, Rev. Mod. Phys. (1980) 52, 299-339, "Multiple expansions of gravitational radiation"