Reviews of topical problems

A.O. Vaisenberg “Lifetime of charmed particles (A review of experimental data)” 24 733–754 (1981)

Ya.B. Zel’dovich, M.Yu. Khlopov “The neutrino mass in elementary-particle physics and in big bang cosmology” 24 755–774 (1981)

R.I. Karaziya “Excited electron orbit collapse and atomic spectra” 24 775–794 (1981)

Methodological notes

A.M. Ignatov, A.A. Rukhadze “Ambiguity in the definition of the magnetic permeability of material media” 24 795–797 (1981)

From the current literature

A.Ya. Parshin “Crystallization waves in ⁴He” 24 798–799 (1981)