Two-photon generation of excitonic molecules in CuCl and CuBr -- Excitonic molecule and its bose condensation -- Biexciton luminescence in CuCl and CuBr -- Biexcitons IN CuCl -- Bose-einstein condensation of free excitons in AgBr -- Decay of two indirect excitons to direct and to indirect exciton state in thallous halides -- Biexciton fluorescence line shape in CdS -- Stress-induced splitting of emission lines from excitonic molecules in CdS and ZnO -- Spatial diffusion of highly created excitons in CdS -- Effects of excitonic molecules on emission and transmission spectra of CdS single crystals -- Long range order and superfluidity for bose condensed excitons -- Superfluid and excitonic states -- DLRO, ODLRO and superfluidity -- Semiconductor-metal transitions -- The kinetics of decay of electron-hole droplets in germanium -- Effect of the surface energy on the electron-hole drop luminescence in Ge -- Surface properties of electron-hole liquid in germanium -- Thermodynamical approach to the highly excited -- Auger recombination in the electron-hole drops IN Si and Ge -- Transport properties of high density electron-hole plasmas at low temperatures -- On the shape of the droplet in uniaxially stressed Ge -- Two-dimensional electron-hole metallic liquids -- Motion of electron-hole drops in ge at low exciton densities -- Luminescence and transport properties of electron-hole drops in highly excited germanium -- Cyclotron reonance study of diffusion problems in highly excited germanium -- Nucleation phenomena in electron-hole drop condensation in ultra-pure Ge -- An old story of new cyclotron resonance peaks in highly excited germanium -- Electron-hole drops in silicon -- Stochastic models of intermediate state interaction in second order optical processes -- Photoluminescence in highly excited GaSe -- Stimulated emission in layer-type semiconductors -- Effects of excitation-induced optical absorption in highly excited semiconductors -- High excitation of direct semiconductors like CdS -- Pico-second spectroscopy of highly excited semiconductors -- Comment on “self-induced transparency in the exciton system” -- Coherent optical pulses in crystals.