My condolences to the Stern family. I just found out about Bill's passing.
I had the pleasure of working with Bill at Setra as a Applications Engineer under Bill's supervision for several years in the 1978 to 1980 time frame.
On my list of 10 unforgettable and influential people who helped grow and shape my career, 5 were at Setra.
Paul Kowalski

What a wonderful life! If only everyone could live life as fully as Bill did. Musician, engineer, father, athlete, wit, outdoorsman, husband...