Reviews of topical problems

N.B. Delone, B.A. Zon, V.P. Krainov, V.A. Khodovoi “Nonresonance perturbation of an atomic spectrum in a strong light field” Sov. Phys. Usp. 19 711–740 (1976)

E.F. Makarov, A.V. Mitin “Gamma-resonance solid-state spectroscopy under highfrequency excitation conditions” Sov. Phys. Usp. 19 741–757 (1976)

Physics of our days

I.I. Sobel’man “Exploitation of solar energy” Sov. Phys. Usp. 19 758–764 (1976)

Meetings and conferences

A.M. Baldin “The Physics of Relativistic Nuclei” Sov. Phys. Usp. 19 765–765 (1976)

B.N. Esel’son, V.N. Grigor’ev, V.A. Mikheev “Experimental Observation and Investigation of Quantum Diffusion in Solid Helium” Sov. Phys. Usp. 19 766–767 (1976)

S.Ya. Braude “Certain Results of Experimental Studies in Decameter Radio Astronomy” Sov. Phys. Usp. 19 767–768 (1976)

V.N. Alfeev “Properties and Uses of Structures Based on Paraelectrics, Superconductors and Semiconductors” Sov. Phys. Usp. 19 768–769 (1976)

V.M. Galitskii “Anomalous States and Collective Motions of Nuclear Matter” Sov. Phys. Usp. 19 769–771 (1976)