Cassidy, E., Allsopp, M. and Williams, T. ORCID: https://orcid.org/0000-0003-0072-3316 (1999) Obsessive compulsive symptoms at initial presentation of adolescent eating disorders. European child & adolescent psychiatry, 8 (3). pp. 193-199. ISSN 1435-165X

Martin, N. T., Gaffan, E. and Williams, T. ORCID: https://orcid.org/0000-0003-0072-3316 (1999) Experimental functional analyses for challenging behavior: a study of validity and reliability. Research in developmental disabilities, 20 (2). pp. 125-146.

Stevens, T., Williams, T. ORCID: https://orcid.org/0000-0003-0072-3316 and Gaffan, E. (1999) Structured teaching for special school staff: a comparison of two training packages. Journal of Applied Research in Intellectual Disabilities, 12 (4). pp. 308-322.

Williams, T. ORCID: https://orcid.org/0000-0003-0072-3316 and Allsopp, M. (1999) Obsessional Compulsive Disorder in adolescent populations: experiences of offering a combined pharmacological--psychological approach. Child Psychology and Psychiatry Review, 4 (04). pp. 162-169.