  The paper analyses the citation impact of Library and Information Science,
LIS for short, research articles published in 31 leading international LIS
journals in 2015. The main research question is: to what degree do authors'
disciplinary composition in association with other content characteristics of
LIS articles affect their citation impact? The impact is analysed in terms of
the number of citations received and their authority, using outlier
normalization and subfield normalization. The article characteristics analysed
using quantitative content analysis include topic, methodology, type of
contribution, and the disciplinary composition of their author teams. The
citations received by the articles are traced from 2015 to May 2021. Citing
document authority is measured by the citations they had received up to May
2021. The overall finding was that authors' disciplinary composition is
significantly associated with citation scores. The differences in citation
scores between disciplinary compositions appeared typically within information
retrieval and scientific communication. In both topics LIS and computer science
jointly received significantly higher citation scores than many disciplines
like LIS alone or humanities in information retrieval, or natural sciences,
medicine, or social sciences alone in scientific communication. The paper is
original in allowing joint analysis of content, authorship composition, and
impact.
