For more on site swap, read also B. Polster: The Mathematics of Juggling. Springer, 2002. (https://www.amazon.com/Mathematics-Juggling-Polster-Burkard-Paperback

For more on site swap, read also B. Polster: The Mathematics of Juggling. Springer, 2002. (https://www.amazon.com/Mathematics-Juggling-Polster-Burkard-Paperback/dp/B00JYHVORI/ref=sr_1_2?ie=UTF8&qid=1532520613&sr=8-2&keywords=The+Mathematics+of+Juggling https://www.amazon.com/Mathematics-Juggling-Polster-Burkard-...) and here is a review by @allenknutson (writer of the FAQ): https://www.ams.org/notices/200401/rev-knutson.pdf https://www.ams.org/notices/200401/rev-knutson.pdf