K. Małkiewicz, P. Wychowański, E. Małkiewicz, D. Olczak-Kowalczyk, and J. Turło, “The release of biologically hazardous chemical compounds from orthodontic adhesive systems used in Europe and in the USA — an in vitro study”, p, vol. 60, no. 5, pp. 309-315, May 2015.