%0 Journal Article %J J. Quant. Spectrosc. Radiat. Transf. %D 2013 %T Optical forces in a non-diffracting vortex beam %A M Šiler %A P. Zemánek %K MF %B J. Quant. Spectrosc. Radiat. Transf. %V 126 %P 78-83 %G eng %R 10.1016/j.jqsrt.2012.08.030