19311 Donald Knuth: The art of computer programming 4/4.
Generating all trees. History of combinatorial generation.
Addison-Wesley 2006, 120p. Eur 19.

26749 Sean Luke/Liviu Panait: A survey and comparison of tree generation algorithms.
Internet, 8p.

24893 Frank Ruskey/Aaron Williams: Generating balanced parentheses and
binary trees by prefix shifts. Internet 2008, 9p.