Wibawanti, R., A. Agustina, M. M. Muda, and R. A. Werdhani. “Fatigue Management For Pilots With Physical Activities, Physical Exercises And Sleeping Arrangement”. Journal Of The Indonesian Medical Association, Vol. 69, no. 12, Mar. 2020, pp. 373-8, doi:10.47830/jinma-vol.69.12-2019-169.