Jumping, jumpheights

The (UK) KC has good paper online about jumping and jumpheight : 

http://www.thekennelclub.org.uk/download/10103/Annex-E-_ii_-Summary-of-Anatomical-and-Biomechanical-Consequences-of-differing-jump-heights-in-Dog-Agility.pdf 

at the end are references listed, try to find them online and listing them below

first Swarte, Mouwen & Mouwen from a lecture given by Dr H C  Schamhardt, of the Veterinary faculty of Utrecht University :

http://www.sportdierenarts.mouwen.nl/index.php/sporthond/loads

Front and Rear Angulation in the Working Dog written by Fred Lanting :

http://www.fredlanting.org/2008/10/front-and-rear-angulation-in-the-working-dog-2/

Structure as it relates to the performance dog, by Nina Plail :

http://www.sheltieranch.com/articles/structure.html