. 2015 Apr-Jun;5(2):77–87.
Copyright: © Journal of Medical Signals and Sensors
This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Figure 10.
Cos λ and 
curves