REFERENCES
- Fischer and Steinhausen . 1925 . Handbuch der normalen und pathologischen Physiologie , Vol. VIII I , 642 – 643 . Berlin : Springer . (With technical references.)
- Fitz , G. W. 1908 . Principles of Physiology and Hygiene , 53 – 60 . New York : Henry Holt & Co. .
- Hall and Bergen . 1897 . A Text Book of Physics, , revised , 259 – 260 . New York : Henry Holt & Co. .
- Haycraft , J. B. 1900 . “Animal Mechanics,” . Schäfer's Text-Book of Physiology , II : 251 – 252 . Pentland, Edin.
- Martin , H. N. 1898 . The Human Body, , 5th ed. , Edited by: Fitz , G. W. 65 – 66 . New York : Henry Holt & Co. . briefer course