References
- Bernius S. The impact of open access on the management of scientific knowledge. Online Information Review. 2010;34: 583-603.10.1108/14684521011072990
- en.wikipedia.org/wiki/Arxiv(March2,2011)
- Bernstein DP. Impedance cardiography: Pulsatile blood flow and the biophysical and electrodynamic basis for the stroke volume equations. J. Electr. Bioimp. 2010;1:2-17.
- www.google.com/analytics (March 2, 2011)