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2. A.C. Fonseca in “Few-Body Methods: Principles and Applications”, Ed. by T. Lim, C. Bao, D. Hou and S. Huber ( world Scientifique, Singapore (1986).
3. H. Fiedeldey, Nucl. Phys. A463. 335 c (1987).
4. A.C. Fonseca, Lecture Notes in Physics 273, 161 (1986).
5. Y. Akaishi, Few-Body Systems, Suppl. 2, 64 (1987); Lecture Notes in Physics 273, 324 (1986).