 He has been a visiting research fellow at the Office of the Commissioner for Children, Wellington, New Zealand; at the University of Connecticut, Child Welfare Research Centre and University of Albany, New York, Rockefeller College of Public Affairs & Policy, and a visiting lecturer at Norges Kommunalog Sosialhøgskole, Oslo.He has contributed material to the "Blackwell Companion to Social Work", one of the leading social work textbooks for undergraduates.A full list of publications is available at the website listed below.