A. Wagner, K. Buczyłko, A. Szwed, and H. Zielińska-Bliźniewska, “Lack of correlation between specific rBetv1, rBetv2 IgE and cross-reactive food allergens in birch pollen allergic patients”, Alergoprofil, vol. 11, no. 2, pp. 23-33, Jun. 2015.