An obituary for Hans-Günter Groth, researcher on stellar atmospheres and Professor of Physics at the University of Munich, appeared in Mitteilungen Astronomische Gesellschaft, Nr. 77 (Jahresbericht 1993), pp. 9-10.
Additional links:
http://adsabs.harvard.edu/abs/1994MitAG..77....9
http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?1994MitAG..77....9.&%3Bdata_type=PDF_HIGH&%3Bwhole_paper=YES&%3Btype=PRINTER&%3Bfiletype=.pdf