4.
Title: THE PROBLEM OF PARITY IN ROTATION OF POLYATOMIC MOLECULES AND DIPOLE TRANSITIONS Authors: V.K. Konyukhov. Abstract:
5.
Title: NONRADIATIVE ENERGY TRANSFER FROM THE 2P3/2 LEVEL OF Er3+ IONS IN YLiF4 CRYSTALS Authors: V.P. Danilov, A.M. Prokhorov, M.I. Studenikin, D.. Schmid, L.O. Svan, B.. Spinger. Abstract: