Takeyama, H., Matsumoto, S., Murata, K., Ebara, T., Kubo, T., Tachi, N., & Itani, T. (2004). Effects of the length and timing of nighttime naps on task performance and physiological function . Revista De Saúde Pública, 38(supl.), 32-37. https://doi.org/10.1590/S0034-89102004000700006