Tuleja, Monika, 		Krupa, Aleksandra, 		Góralski, Grzegorz, AND 		Płachno, Bartosz.
" Morphological and histological events in the preliminary tissue culture of haploid and diploid Pelargonium zonale var. ‘Kleiner Liebling’" <em>Modern Phytomorphology</em> [Online], Volume 6(1 April 2014)