Reviews of topical problems

B.M. Smirnov “Fractal clusters” 29 481–505 (1986)

B.E. Meierovich “Toward the realization of electromagnetic collapse” 29 506–529 (1986)

Physics of our days

S.S. Rozhkov “Topology, manifolds, and homotopy: Basic concepts and applications to n-field models” 29 530–538 (1986)

New instruments and measurement methods

I.B. Borovskii, R.V. Vedrinskii, V.L. Kraizman, V.P. Sachenko “EXAFS spectroscopy: a new method for structural investigation” 29 539–569 (1986)

Meetings and conferences

A.A. Sobyanin “General properties of systems with a ’double’ critical point” 29 570–572 (1986)

I.L. Fabelinskii, S.V. Krivokhizha, L.L. Chaikov “Experimental studies of solutions with a ’double’ critical point” 29 572–573 (1986)

A.A. Volkov, G.V. Kozlov, E.B. Kryukova, A.A. Sobyanin “New results on the dynamics of Rochelle salt crystals (a system with a ’double’ critical point)” 29 574–575 (1986)

B.A. Volkov, O.A. Pankratov “Electronic structure of quasicubic crystals: energy bands, dielectric properties, and defects in narrow-gap semiconductors.” 29 575–577 (1986)

L.A. Fal’kovskii “The origin of electron spectra of group V semimetals” 29 577–579 (1986)

B.A. Volkov, O.A. Pankratov “Inverted contact in semiconductors—a new inhomogeneous structure with a twodimensional gas of zero-mass electrons” 29 579–581 (1986)

E.A. Mamidzhanyan, A.D. Erlykin, V.A. Tsarev “Interaction of hadrons at superhigh energies” 29 582–584 (1986)

Personalia

A.P. Aleksandrov, S.T. Belyaev, E.P. Velikhov, Yu.M. Kagan, B.B. Kadomtsev, V.A. Legasov “Isaak Konstantinovich Kikoin (Obituary)” 29 585–586 (1986)

A.P. Aleksandrov, Zh.I. Alferov, N.G. Basov, V.S. Vavilov, L.N. Kurbatov, G.V. Kurdyumov, Yu.A. Osip’yan, A.F. Plotnikov, A.M. Prokhorov, V.M. Tuchkevich, I.M. Khalatnikov, A.P. Shotov “Bentsion Moiseevich Vul (Obituary)” 29 587–588 (1986)