Geodesic
Method of solving the BBGKY equations for a Van Der Waals crystal
Teoretičeskaâ i matematičeskaâ fizika, Tome 23 (1975) no. 3, pp. 399-408 
I. I. Ol'khovskii. Method of solving the BBGKY equations for a Van Der Waals crystal. Teoretičeskaâ i matematičeskaâ fizika, Tome 23 (1975) no. 3, pp. 399-408. http://geodesic.mathdoc.fr/item/TMF_1975_23_3_a12/
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     title = {Method of solving the {BBGKY} equations for a {Van} {Der} {Waals} crystal},
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Voir la notice de l'article provenant de la source Math-Net.Ru

It is suggested that the stationary distribution functions of the successive approximations should be searched for in the form of the decomposition over $\delta$-functions and their derivatives with respect to the particles coordinates. The solutions of the zeroth and first approximations as well as corresponding expressions for the equations of the state of the Van der Vaals crystal are given.

[1] N. N. Bogolyubov, Problemy dinamicheskoi teorii v statisticheskoi fizike, OGIZ, 1946 | MR

[2] I. I. Olkhovskii, DAN SSSR, 208 (1973), 808

[3] I. I. Olkhovskii, TMF, 15 (1973), 382