DE CHATEAU, P. Long-term effect on mother-infant behaviour of extra contact during the first hour post partum, III. Follow-up at one year. Scand J Soc Med. 1984, 12, 2, 91-103
ANISFELD, E. Early contact, social support, and mother-infant bonding. Pediatrics. 1983, 72, 1, 79-83
SUNG, MH. A study of the effects of behavior contact in early mother-infant attachment. Taehan Kanho Hakhoe Chi. 2005, 35, 5, 842-849