Kozak, Igor, et al. "Morphologic and volumetric studies of the meibomian glands in elderly human eyelids." Cornea 26.5 (2007): 610-614.
Marsala, Jozef, Darina Kluchova, and Martin Marsala. "Spinal cord gray matter layers rich in NADPH diaphorase-positive neurons are refractory to ischemia–reperfusion-induced injury: A histochemical and silver impregnation study in rabbit." Experimental neurology 145.1 (1997): 165-179.
Gál, Peter, et al. "Chemokines as possible targets in modulation of the secondary damage after acute spinal cord injury: a review." Cellular and molecular neurobiology 29.6-7 (2009): 1025.