Section I: Invited Reviews and General Discussions.- The upper HR diagram - An observational overview.- Discussion.- Observations and interpretations of stellar pulsations.- Discussion.- Theory of non-radial pulsations in massive early-type stars.- Discussion.- Theory of vibrational instabilities in luminous early type stars.- Discussion.- Observed variations in O and Of stars.- Discussion.- Observed variations in Wolf-Rayet stars.- Discussion.- Variations in luminous blue variables.- Discussion.- Giant outbursts of the Eta Carinae - P Cygni type.- Discussion.- Instabilities due to convection and rotation.- Discussion.- Shock waves in luminous early-type stars.- Discussion.- Radiation driven instabilities.- Discussion.- Stellar instabilities in the upper part of the Hertzsprung-Russell Diagram.- Section II: Poster Papers.- Massive stars in nearby galaxies.- Rate of mass-loss in the Hertzsprung-Russell Diagram.- The unstable of 06.5f?p star HD 148937 and its interstellar environment.- Two comments of the Beta Cephei variable 12 Lacertae.- Non radially pulsating Wolf-Rayet stars.- Sobolev type line profile in case of non radial wind density perturbations.- Episodic distortion and dust formation in the wind of WR140.- Photometric variability of Wolf-Rayet stars.- Improved mass loss rates for WC7-9 stars: their effect on the Wolf-Rayet stellar wind momentum problem.- Variability of Wolf-Rayet stars in linear polarization.- An extended nebulosity surrounding the S Dor variable R127.- The LMC-S Dor variable R 71 - an IRAS point source.- Eclipse spectrum of the LMC P Cyg star R 81.- The light- and colour variation of Eta Carinae for the years 1983-1986 in the VBLUW system.- Do superluminous stars really explode?.- Radiation pressure in acoustic wave calculations of early type stars.- The influence of photospheric turbulence on stellar mass loss.- Nonlinear dynamics of instabilities in line-driven stellar winds.- The X-ray emission of Tau Sco, Bo V, and the problems posed for embedded shock models.- Name index.- Object index.
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