From the Vienna Phil:
Alfred Altenburger (1927 – 2015)
We mourn the loss of Prof. Alfred Altenburger, member of our first violin section and former chairman (from 1978 to 1987). May he rest in peace.
A painstaking, resolute man, Altenburger cultivated discreet relationships with conductors, notably Karajan and Abbado. Upon retirement he became a board member of Abbado’s Gustav Mahler Youth Orchestra and a mentor to young players in its first violin section.
You can listen to a 1978 radio interview with him here (in German).