Contents

Physics of Particles and Nuclei

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Vol. 50, No. 2, 2019

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Separations of Variables and Analytic Contractions on Two-Dimensional Hyperboloids

G. S. Pogosyan and A. Yakhno p. 87  abstract

Interplay between Approximation Theory and Renormalization Group

V. I. Yukalov p. 141  abstract

Terahertz Solitons in Condensed Media

A. N. Bugay p. 210  abstract

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