In memoriam Prof. Dr. HELMUT VINAZZER, 21. 1. 1923 - 27. 10. 2000 Download Obituary Prof. Dr. GÜNTER VOGEL, 11. 12. 1934 – 4. 1. 2011 Download Obituary Prof. Dr. ORHAN NURI ULUTIN, 1. 1. 1924 - 2. 11. 2011 Download Obituary