Perceptions of primary and secondary relationships in polyamory Balzarini, Rhonda N. ; Campbell, Lorne ; Kohut, Taylor ; Holmes, Bjarne M. ; Lehmiller, Justin J. ; Harman, Jennifer J. ; Atkins, Nicole Abstract Publication: PLoS ONE Pub Date: May 2017 DOI: 10.1371/journal.pone.0177841 Bibcode: 2017PLoSO..1277841B