The Interaction of Stellar Winds with Their Environment: Theory and Modelling

This paper contains an introductionary review of the theory of stellar wind bubbles. I describe the basic difference between radiative and adiabatic bubbles, the effects a central photo-ionizing source may have and in some more detail how these concepts can be used to explain the formation of Planetary Nebulae. This revised version was published online in July 2006 with corrections to the Cover Date.