RT Journal Article SR Electronic T1 Equations for depth of penetration of projectiles JF Journal of the Royal Army Medical Corps JO J R Army Med Corps FD British Medical Journal Publishing Group SP 261 OP 261 DO 10.1136/jramc-2014-000314 VO 160 IS 3 A1 Hutchinson, Timothy P YR 2014 UL http://militaryhealth.bmj.com/content/160/3/261.2.abstract AB