Rigo, J. et al. Enteral calcium, phosphate and vitamin D requirements and bone mineralization in preterm infants. Acta. Paediatr. 96 (7), 2007, 969-74.
Rigo, J. et al. Nutritional needs of premature infants : current issues. J. Pediatr. 149 (5), 2006, S80-8.
Harrison, CM. et al. Osteopenia of prematurity : a national survey and review of practice. Acta. Paediatr. 97 (4), 2008, 407-13.