JAKOBSON SVEN, and IVARSSON INGRID. 1977. “Thoraco-Abdominal Perimetry for Partitioning of the Tidal Volume into Fractions Due to Rib Cage Expansion and Diaphragmatic Descent”. Upsala Journal of Medical Sciences 82 (1). https://doi.org/10.3109/03009737709179056.