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Article Contents
1 Introduction
2 Observations of the IRV/SRV sample
3 The Mira sample
4 Modelling of circumstellar line emission
5 CO modelling of the Miras
6 Size of the SiO envelope
7 Results of the SiO line model fits
8 Discussion and conclusions
Appendix A: Observational results
Appendix B: Spectra

List of tables
List of figures

Copyright ESO 2003
Published by EDP Sciences