Multidimensional two-particles problem with non-central potential
Séminaire sur les équations non linéaires (Choodnovsky) (1977-1978), Exposé no. 5, 8 p. 
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     author = {Choodnovsky, D. V. and Choodnovsky, G. V.},
     title = {Multidimensional two-particles problem with non-central potential},
     journal = {S\'eminaire sur les \'equations non lin\'eaires (Choodnovsky)},
     note = {talk:5},
     pages = {1--8},
     year = {1977-1978},
     publisher = {Ecole Polytechnique, Centre de Math\'ematiques},
     language = {en},
     url = {https://www.numdam.org/item/SENL_1977-1978____A6_0/}
}
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Choodnovsky, D. V.; Choodnovsky, G. V. Multidimensional two-particles problem with non-central potential. Séminaire sur les équations non linéaires (Choodnovsky) (1977-1978), Exposé no. 5, 8 p.. https://www.numdam.org/item/SENL_1977-1978____A6_0/

[1] P. Laplace, Traité de Mécanique Céleste, V. 1, Paris, 1805.

[2] A. Poincaré, Œuvres, Paris.

[3] G.V. and D.V. Choodnovsky, Novel first integrals for the Fermi-Pasta-Ulam lattice with cubic nonlinearity and for other many-body systems in one and three dimensions, Lett. al Nuovo Cimento, v. 19, No 8 (1977), 291-294.

[4] I.M. Gelfand, L.A. Dikij, Asimptotika resolventi Shturm-Liuvillevskih yravnenij i algebra yravnenij Kortevega-de-Vriesa, Yspekhi mat. nauk., 1975, v. XXX w 5 (russian).