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References
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G. F. Coster, Phys. Rev., 109 (1958), 227   |
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R. L. Anderson, R. Raczka, M. A. Rashid, P. Winternitz, J. Math. Phys., 11 (1970), 1050  |
| 3. |
W. H. Klink, Mixed Basis D Functions and Clebsch-Gordan Coefficients of Noncompact Groups, preprint, Princeton, 1969 |
| 4. |
G. W. Ruhl, Nuovo Cim., 63A (1969), 1131 |
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G. W. Mackey, Ann. Math., 55 (1952), 101 |
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M. A. Naimark, Tr. Mosk. matem. ob-va, 8 (1959), 121  |
