Jerzy received his promotion some time ago and now dwells in a higher realm.
Much of his work was not published.
I have probably everything he did on this analytical work, and I would be happy to make copies available to you, except for his draft, unpublished work.
I cannot do this immediately because I will need to find it first, and at the moment I have a few difficulties which make finding and copying something of a major task.
Please PM me a postal address and I'll do what I can, when I can.
Here is a link to something that is available:-
https://books.google.com.au/books/ab...AJ&redir_esc=y