STRGULC-KRAJŠEK, Simona and JOGAN, Jernej, 2004, Epilobium obscurum Schreb., new species in the flora of Slovenia. Natura Sloveniae. revija za terensko biologijo [online]. 2004. Vol. 6, no. 1, p. 5–10. [Accessed 25 April 2025]. Retrieved from: http://www.dlib.si/details/URN:NBN:SI:doc-T1NILOBT