Apr. 2007
Journal of Applied Physics 101 081706 (2007). http://dx.doi.org/10.1063/1.2722734. See also http://proceedings.aip.org/proceedings/confproceed/893.jsp.
Journal of Applied Physics 101 081706 (2007). http://dx.doi.org/10.1063/1.2722734. See also http://proceedings.aip.org/proceedings/confproceed/893.jsp.