Basic Aerobatics - Geza Szurovy, Mike Goulian - Google Books

http://books.google.de/books?id=kc3aoLOiGVkC&pg=PA150&dq=%22knife+edge%22+aerobatics&hl=en&sa=X&ei=X36RT9WPHI3ZsgaRpKGhBA&redir_

For the serious aerobatics student or pilot who wants to learn more about aircraft control, Basic Aerobatics is the best-illustrated, most thorough manual on the market today. Learn all you need to know to perform exciting maneuvers such as spins, loops,…