@article { SilerJQSRT15, title = {Optical trapping in secondary maxima of focused laser beam}, journal = {J. Quant. Spectrosc. Radiat. Transf.}, volume = {162}, year = {2015}, pages = {114 - 121}, keywords = {MF}, doi = {10.1016/j.jqsrt.2015.03.003}, author = {M {\v S}iler and P. Zem{\'a}nek} }