NewmanG. V. (1978) A posttreatment survey of direct bonding of metal brackets. American Journal of Orthodontics, 74, 197–206.
2.
ReynoldsI. R. (1975) A review of direct orthodontic bonding. British Journal of Orthodontics, 2, 171–178.
3.
ZachrissonB. U. and BrobakkenB. O. (1978) Clinical comparison of direct versus indirect bonding with different bracket types and adhesives. American Journal of Orthodontics, 74, 62–78.