Alternative approaches Chlorophyll fluorescence

^ handy pea: continuous excitation plant efficiency analyser (pdf). norfolk: hansatech instruments. 2012. p. 2. 
^ lavrov; et al. (2012). water stress assessment of cork oak leaves , maritime pine needles based on lif spectra . optics , spectroscopy. springer. 112 (2): 271–279. doi:10.1134/s0030400x12020166. 
^ silvestre et al. contribution of pplaiiα drought tolerance using genetically modified arabidopsis plants: ii. effects on photosynthetic metabolism. int. meeting prog. plant symposium of seb: oxidative stress , cell death in plants: mechanisms , implications, florence, italy, 26–28 june 2013, p. 5
^ utkin; et al. (2013). compact low-cost detector in vivo assessment of microphytobenthos using laser induced fluorescence . optics , spectroscopy. springer. 114 (3): 471–477. doi:10.1134/s0030400x13030259. 
^ vieira; et al. (2011). effects of intertidal microphytobenthos migration on biomass determination via laser-induced fluorescence . marine ecology progress series. 432: 45–52. doi:10.3354/meps09157.