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2. M.R. Anastasio and G.E. Brown, Nucl. Phys. A285 (1977) 516.
3. K. Ando, H. Bando and S. Nagata, Supplement, Progress of Theoretical Physics, No. 65 (1979) 1. See also the other articles contained in this issue entitled “Effective Interactions in Nuclear Models and Nuclear Forces.”
4. A. Arima and I. Iachello, Ann. Phys. (NY) 111 (1978) 201; 115 (1978) 325.
5. M.R. Anastasio, J.W. Hockert and T.T.S. Kuo, Phys. Lett. B 53 (1974) 221.