BjorgellOEkbergOAkesonHOlsenR. Videophlebography with foot venous pressure measurements: Description of a technique for diagnosing venous dysfunction. Phlebology1997; 12: 100–6.
2.
GardnerAMNFoxRH. The venous pump of the human foot. Bristol Med Chir1983; 98: 109–12.
3.
GardnerAMNFoxRH. The return of blood to the heart against the force of gravity. In: NegusDJantetG, Editors. Phlebology '85. London: John Libbey, 1986: 65–7.
4.
FoxRHGardnerAMN. Videophlebography in the investigation of venous physiology and disease. In: NegusDJantetG, Editors. Phlebology '85. London: John Libbey, 1986: 68–71.
5.
GardnerAMNFoxRH. (eds) The return of blood to the heart, 2nd revised edition. London: John Libbey, 1993.