@article { SilerJQSRT13b,
	title = {Optical forces in a non-diffracting vortex beam},
	journal = {J. Quant. Spectrosc. Radiat. Transf.},
	volume = {126},
	year = {2013},
	pages = {78-83},
	keywords = {MF},
	doi = {10.1016/j.jqsrt.2012.08.030},
	author = {M {\v S}iler and P. Zem{\'a}nek}
}
