Raffle A.Medical aspects of fitness to drive, fourth edition. London : HMSO, 1985.
2.
Downie P.Cash's textbook of orthopaedics and rheumatology for physiotherapists. London: Faber & Faber, 1984.
3.
Fisher SV, Bower JF, Awad EACervical orthoses' effect on cervical spine motion: roentgenographic and goniometric method of study. Arch Phys Med Rehabil1977 ; 58: 109-18.
4.
Johnson RM, Hart DL, Simmons EF, Ramsby GR, Southwick WOCervical orthoses: a study comparing their effectiveness in restricting cervical motion in normal subjects. J Bone Joint Surg1977; 59A: 332-39.