Orlikowski LB, Ptaszek M, Rodziewicz A, Nechwatal J, Thinggaard K, Jung T. Phytophthora root and collar rot of mature Fraxinus excelsior in forest stands in Poland and Denmark. Forest Pathology [Internet]. 2011  ;41:510?519. Available from: http://dx.doi.org/10.1111/j.1439-0329.2011.00714.x

Orlikowski LB, Oszako T, Szkuta G. First record on Phytophthora spp. associated with the decline of European beech stand in south-west Poland. Phytopatologia Polonica. 2006  ;42:37-46.