References
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- Ganslen , Richard V. 1940 . A mechanical analysis of the pole vault , M. Ed. thesis Springfield College .
- Hopper , B. J. 1964 . Pole vault: John Pennel at 16 ft. 10¼ in . Coaching Newsletter. , : 3 – 4 . No. 26
- Linder , Erich . 1964 . Zum Springen mit dem Glasfiberstab . Die Lehre der Leichtathletik. , : 629 – 31 . No. 23
- Morris , Ronald H. 1958 . A cinematographic study of the pole plant and take-off of successful pole vaulters , M.A. thesis University of Southern California .
- Pikulsky , Theodore T. 1964 . Fiber glass pole vaulting . Ath. J. , 44 : 16
- Warmerdam , Cornelius A. 1941 . Factors associated with the approach and take-off in pole vaulting , M.A. thesis Leland Stanford Junior University .