The role of special language in relation to knowledge organization. - Martin Thellefsen (ASIST, 2003)

Concept theory and semiotics in knowledge organization. - Alon Friedman; Martin Thellefsen (J. Documentation, 2011)

Emotion, information, and cognition, and some possible consequences for library and information science. - Torkild Thellefsen; Martin Thellefsen; Bent Sørensen (J. Assoc. Inf. Sci. Technol., 2013)

The information concept of Nicholas Belkin revisited - some semeiotic comments. - Torkild Thellefsen; Bent Sørensen; Martin Thellefsen (J. Documentation, 2014)

The Concept of Information in Library and Information Science A Field in Search of Its Boundaries: 8 Short Comments Concerning Information. - Torkild Thellefsen; Martin Thellefsen; Bent Sørensen (Cybern. Hum. Knowing, 2015)

The Fallacy of the Cognitive Free Fall in Communication Metaphor: A Semiotic Analysis. - Martin Thellefsen; Torkild Thellefsen; Bent Sørensen (Libr. Trends, 2015)

Information as signs: A semiotic analysis of the information concept, determining its ontological and epistemological foundations. - Martin Thellefsen; Torkild Thellefsen; Bent Sørensen (J. Documentation, 2018)

Domain analytical information and knowledge organization: investigating the externalist and internalist conception of information. - Martin Muderspach Thellefsen (J. Documentation, 2023)

Signifying unity: exploring the interplay of semiotics, universalism and pluralism in information science. - Martin Muderspach Thellefsen (J. Documentation, 2024)

From realism and socio-cognitivism to AI constructs: enhancing domain analysis through artificial intelligence? - Martin Thellefsen; Alon Friedman (Inf. Res., 2025)