Descendants and ascendants in search trees

The paper has a lot of generating functions! It is related to work of Janice Lent and Patrizio Poblete.

helmut@gauss.cam.wits.ac.za,

Conrado Martinez,


This paper is available in the PostScript format.
Here is the new and improved version, with Alois Panholzer as a new coauthor:
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