“…In our next paper (17), with the help of Eqs. [1] and [2] and using the eigenfunctions of this effective Hamiltonian we fitted the parameters of the matrix elements of the effective dipole-moment operator to the observed values (7) of the rotationless transition moments of the bands belonging to the ⌬P ϭ 2, 3, 4, 5, and 6 series of transitions.…”