1. ANDREAS, J.M., Boundary tension by pendant drops, JOURNAL OF PHYSICAL CHEMISTRY 42: 1001 (1938).
2. Best C. H. Physiological Basis of Medical Practice 2 819 (1940).
3. Donnan, F., Zeitschrift fur physikalische Chemie 31: 42 (1899).
4. FORDHAM, S, ON THE CALCULATION OF SURFACE TENSION FROM MEASUREMENTS OF PENDANT DROPS, PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES 194: 1 (1948).
5. FRAZER, A. C., JOURNAL OF PHYSIOLOGY-LONDON 103: 306 (1944).