Barea-Azcón et al. (2008)†, Burford et al. (2000), de Gibert et al. (2013)†, Ens et al. (1993)†, Fazhan et al. (2017)†, González-Ortiz et al. (2014)†, Jordão & Oliveira (2003), Keeratipattarakarn et al. (2020)†, Klaassen & Ens (1993)†, Kuhapong et al. (2021)†, Lourenço et al. (2000), Morrisey et al. (1999)†, Mourente et al. (1994)†, Ohno et al. (2006)†, Oliveira & Custódio (1998), Rodríguez et al. (1997)†, Rodríguez-Tovar et al. (2014)†, Spivak & Cuesta (2009)†, Tina et al. (2017)†, Tina et al. (2017)†, Tina et al. (2018)†, Tina et al. (2015)†, Wang et al. (2009)†, Weis & Weis (2004)†, Wolfrath (1992), Wolfrath (1992), Wolfrath (1993)
Entries marked with † represent indirect references to location through citation.