Arasimowicz-Jelonek M., Floryszak-Wieczorek J., Gzyl J., Chmielowska-Bąk J. 2013. Homocysteine over-accumulation as the effect of potato leaves exposure to biotic stress. Plant Physiology and Biochemistry. 63: 177-84. doi:10.1016/j.plaphy.2012.11.025