Bshouty, ZH., Rodenstein, D., Roeseler, J., & Reynaert, MS. (1986). The Importance of the Balloon Reservoir Volume of a Cpap System in Reducing the Work of Breathing. Intensive Care Medicine, 12(3), 153-156. https://doi.org/10.1007/BF00254931 (Original work published 1986)