Boschi et al. (1992)*, Cremonte et al. (2007)*, Hemmi & Tomsic (2015), Iribarne & Martinez (1999)*, Milner et al. (2012)*, Olivier et al. (1972)*, Pereyra et al. (2019)*, Ribeiro et al. (2003)*, Ribeiro et al. (2004)*, Rodríguez & Dezi (1987)*, Rosenberg (2020), Shih et al. (2016)*, Spivak (1997)*, Spivak (1997)†, Spivak et al. (1994)*, Truchet et al. (2022)*, Truchet et al. (2019)*, Valero et al. (1999)*, Weis & Weis (2004)*, Zolessi & Philippi (1995)
Entries marked with † represent indirect references to location through citation.