AirForce:10.1504/IJANS.2015.076523
AirForce:10.1504/IJAP.2007.013022
AirForce:10.1504/IJEM.2016.079016
AirForce:10.1504/IJMPT.2004.004738
AirForce:10.1504/IJVD.2003.003237