Dear Colleagues,
corresponding to the topic above, a publication of Joan Guarro and me have been accepted at IBVS.
It will be published soon under IBVS No. 6103.
See:
http://astrospectroscopy.de/IBVS_6103.pdf
Ernst Pollmann
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International Working Group ASPA
Active Spectroscopy in Astronomy
http://www.astrospectroscopy.de
http://www.astronomie.de/astronomische-fachgebiete