STUMBRYS, T.; ERLACHER, D.; SCHREDL, M. Reliability and stability of lucid dream and nightmare frequency scales. International Journal of Dream Research, [S. l.], v. 6, n. 2, p. 123–126, 2013. DOI: 10.11588/ijodr.2013.2.11137. Disponível em: https://journals.ub.uni-heidelberg.de/index.php/IJoDR/article/view/11137. Acesso em: 1 dec. 2021.