@article { SilerJQSRT13b,
	title = {Optical forces in a non-diffracting vortex beam},
	journal = {J. Quant. Spectrosc. Radiat. Transf.},
	volume = {126},
	year = {2013},
	pages = {78-83},
	doi = {10.1016/j.jqsrt.2012.08.030}
}
