Saracevic, T. (1975). Relevance: A review of and a framework for the thinking on the notion in information science. Journal of the American Society for Information Science, 26(6), 321-343.
Sundin, O. (2003). Towards an understanding of symbolic aspects of professional information: An analysis of the nursing knowledge domain. Knowledge Organization, 30(3/4), 170.
Zins, C., & Guttmann, D. (2003). Domain analysis of social work: An example of an integrated methodological approach. Knowledge Organization, 30(3/4), 196.