Contents

JETP Letters

Vol. 107, No. 6, 2018

A simultaneous English language translation of this journal is available from Pleiades Publishing, Ltd.
Distributed worldwide by Springer. JETP Letters ISSN 0021-3640.

Astrophysics and Cosmology

Strong Standing Gravitational Wave in a Closed Universe

A. A. Kirillov, G. Montani and E. P. Savelova p. 333  abstract

Optics and Laser Physics

Generation of Coupled Modes in an Unmatched Three-Mirror Laser Cavity

M. N. Dubrov and D. V. Aleksandrov p. 338  abstract

Effect of the Excitation Radiation Coherence on Oscillations of the Photon Echo Intensity

V. N. Lisin, A. M. Shegeda, V. V. Samartsev and E. P. Chukalina p. 345  abstract

Whispering Gallery Effect in Relativistic Optics

Y. Abe, K. F. F. Law, Ph. Korneev, S. Fujioka, S. Kojima, S.-H. Lee, S. Sakata, K. Matsuo, A. Oshima, A. Morace, Y. Arikawa, A. Yogo, M. Nakai, T. Norimatsu, E. d’Humières, J. J. Santos, K. Kondo, A. Sunahara, S. Gus’kov and V. Tikhonchuk p. 351  abstract

Observation of the High-Order Fractional Talbot Effect in the Optical Range

A. N. Morozov, L. R. Salbieva, B. G. Skuibin and E. V. Smirnov p. 355  abstract

Visible Emission from a Dense Biexciton Gas in SiGe/Si Quantum Wells under External Anisotropic Strain

S. N. Nikolaev, V. S. Krivobok, V. S. Bagaev, E. E. Onishchenko, A. V. Novikov and M. V. Shaleev p. 358  abstract

Condensed Matter

Magnetic Skyrmions in Thickness-Modulated Films

M. V. Sapozhnikov, O. V. Ermolaeva, E. V. Skorokhodov, N. S. Gusev and M. N. Drozdov p. 364  abstract

Role of Magnetism in the Decomposition of α-Fe–Cu Alloy

I. K. Razumov p. 369  abstract

Parametric Disordering-Driven Topological Transitions in a Liquid Metacrystal

A. A. Zharov Jr., A. A. Zharov and N. A. Zharova p. 373  abstract

Structure and Properties of New High-Pressure Phases of Fe7N3

P. N. Gavryushkin, N. Sagatov, Z. I. Popov, A. Bekhtenova, T. M. Inerbaev and K. D. Litasov p. 379  abstract

Model-Independent X-Ray Scattering Study of a Silica Sol Surface

A. M. Tikhonov, V. E. Asadchikov, Yu. O. Volkov, B. S. Roshchin, V. Honkimäki and M. V. Blanco p. 384  abstract

Retraction Note

Retraction Note to: “Selective Excitation, Coherent Control, and Attosecond Spectrochronography of Electron Subshells in Atomic Systems” [JETP Letters 106, 648 (2017)]

D. V. Meshchankin, A. A. Voronin, E. E. Serebryannikov and A. M. Zheltikov p. 390  abstract