1. The “colic” enigma: Prolonged episodes of a normal predisposition to cry;Barr;Infant Mental Health Journal,1990
2. The normal crying curve: What do we really know?;Barr;Dev Med Child Neurol,1990
3. Recasting a clinical enigma: The problem of early infant crying;Barr,1989
4. Colic and gas;Barr,1990
5. Barr RG, Desilets J: The normal crying curve: Hoops and hurdles. In Lester BM, Newman J, Pedersen F (eds): Biological and Social Aspects of Infant Crying. New York, Plenum, in press.