http://neerc.ifmo.ru/wiki/index.php?title=%D0%9F%D1%80%D0%BE%D0%B8%D0%B7%D0%B2%D0%BE%D0%B4%D1%8F%D1%89%D0%B0%D1%8F_%D1%84%D1%83%D0%BD%D0%BA%D1%86%D0%B8%D1%8F
https://en.wikipedia.org/wiki/Generating_function
https://ru.wikipedia.org/wiki/%D0%9F%D1%80%D0%BE%D0%B8%D0%B7%D0%B2%D0%BE%D0%B4%D1%8F%D1%89%D0%B0%D1%8F_%D1%84%D1%83%D0%BD%D0%BA%D1%86%D0%B8%D1%8F_%D0%BF%D0%BE%D1%81%D0%BB%D0%B5%D0%B4%D0%BE%D0%B2%D0%B0%D1%82%D0%B5%D0%BB%D1%8C%D0%BD%D0%BE%D1%81%D1%82%D0%B8

http://www.genfunc.ru/
http://www.genfunc.ru/theory/
http://www.genfunc.ru/theory/intro/
http://www.genfunc.ru/theory/pril03/

2007
Lando - Lections on Generating Functions ru
    http://files.school-collection.edu.ru/dlrstore/d62ef84c-a780-11dc-945c-d34917fee0be/47_lando_lekcii_o_proizvodyashih_foo.pdf
2001
Bronshtein - Generating Functions ru
    http://www.pereplet.ru/nauka/Soros/pdf/0102_103.pdf