Vedel, Mette (2016). "The triad value function - theorizing the value potential of connected relationships". The Journal of Business & Industrial Marketing. 31 (7): 849. doi:10.1108/JBIM-05-2015-0086. ISSN0885-8624.
Yoon, Jeongkoo; Thye, Shane R.; Lawler, Edward J. (2013-11-01). "Exchange and cohesion in dyads and triads: A test of Simmel's hypothesis". Social Science Research. 42 (6): 1457–1466. doi:10.1016/j.ssresearch.2013.06.003. PMID24090845.
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Yoon, Jeongkoo; Thye, Shane R.; Lawler, Edward J. (2013-11-01). "Exchange and cohesion in dyads and triads: A test of Simmel's hypothesis". Social Science Research. 42 (6): 1457–1466. doi:10.1016/j.ssresearch.2013.06.003. PMID24090845.
"Georg Simmel and Avant-Garde Sociology: The Birth of Modernity, 1880 to 1920". Contemporary Sociology. 32. ISSN0094-3061.
Vedel, Mette (2016). "The triad value function - theorizing the value potential of connected relationships". The Journal of Business & Industrial Marketing. 31 (7): 849. doi:10.1108/JBIM-05-2015-0086. ISSN0885-8624.