Kmeť, V., B. Žatkovič, and P. Pristaš. “Preliminary Report on PCR Detection of Faecal Microflora in Prunella Collaris”. Oecologia Montana, Vol. 13, no. 1-2, Dec. 2004, pp. 42-45, https://om.vuvb.uniza.sk/index.php/OM/article/view/177.