Extending the Scope of the Current Discussion on Metadata Towards Situated Models. - Heidrun Allert; Christoph Richter; Wolfgang Nejdl (CSCL, 2003)

Situated Models and Metadata for Learning Management form an Organisational and Personal Perspective. - Heidrun Allert; Christoph Richter; Wolfgang Nejdl (Wissensmanagement, 2003)

Outline of a Pattern-Oriented Research Strategy for Complex Learning Scenarios. - Christoph Richter; Heidrun Allert (ICLS, 2004)

Lifelong learning and second-order learning objects. - Heidrun Allert; Christoph Richter; Wolfgang Nejdl (Br. J. Educ. Technol., 2004)

Evaluating Computer-Supported Learning Initiatives. - John B. Nash; Christoph Richter; Heidrun Allert (Encyclopedia of Information Science and Technology (II), 2005)

Minimal Activity Plans: Artifacts for Self-Organized Learning within Organizations. - Christoph Richter; Heidrun Allert; Wolfgang Nejdl (Wissensmanagement, 2005)

Lifelong learning in action. - Christoph Richter; Heidrun Allert (Br. J. Educ. Technol., 2005)

Rethinking the Use of Ontologies in Learning. - Heidrun Allert; Hannu Markkanen; Christoph Richter (EC-TEL Workshops, 2006)

Activity Systems and Context Working as Core Concepts in Modeling Socio-Technical Systems. - Heidrun Allert; Christoph Richter (ReTIeL, 2007)

Drawing on practices for modeling socio-technical systems. - Heidrun Allert; Christoph Richter (CSCL, 2007)

Practices, Systems, and Context Working as Core Concepts in Modeling Socio-Technical Systems. - Heidrun Allert; Christoph Richter (WSPI, 2008)

An Educational Perspective: Research Through Design. - Heidrun Allert; Christoph Richter (CSCL, 2011)

Creativity as Practice(d) in a Design Studio. - Christoph Richter; Julia Lembke; Elisa Ruhl; Heidrun Allert (ICLS, 2014)

Modellierung als sozio-materielle Praktik. - Heidrun Allert; Christoph Richter (Wissenschaft und Kunst der Modellierung, 2015)

Grappling with the Not-Yet-Known. - Christoph Richter; Heidrun Allert; Julia Albrecht; Elisa Ruhl (CSCL, 2015)

Perspectives on Data and Practices. - Heidrun Allert; Christoph Richter (WebSci, 2018)

Collaboration on a Massive Scale - Conceptual Implications of the Crowd. - Norma Reichelt; Christine Bussian; Christoph Richter; Heidrun Allert; Lars-Arne Raffel (CSCL, 2019)

Towards a Critical Design Agenda in Support of Collective Learning Ecologies. - Christoph Richter; Heidrun Allert (DeLFI, 2019)

Learning in Unbounded Landscapes - Conceptualizations and Design From an Ecological Perspective. - Crina Damsa; Christoph Richter; Heidrun Allert; Teresa Cerratto-Pargman; Lina Markauskaite; Natasha Arthars; Natalie Spence; Zacharias E. Andreadakis; Jim Slotta (ICLS, 2020)