January 28, 1976

Dear Dr. Rix:

In December I was presented with a collection of papers, among them a paper of your hand. I thank every participant for the work contributed.

Slowly I go through the papers and find many original ideas or observations. Yet I did not wish to postpone any longer the expression of my thanks with detailed reaction to each paper.

I would like to hear from you. With best regards also from my wife, Yours