Yu. Kagan

COLLAPSE AND BOSE-EINSTEIN CONDENSATION IN A TRAPPED BOSE GAS WITH NEGATIVE SCATTERING LENGTH

Yu. Kagan, A. E. Muryshev, G. V. Shlyapnikov, 1998 .

THEORY OF THE HYPERFINE STRUCTURE OF MOSSBAUER LINES IN PARAMAGNETIC SUBSTANCES

A. M. Afanas'ev, Yu. Kagan, 1963 .