Butkus, D., I. P. Bataitienė, and T. Bataitis. “Investigation of 90Sr Acumulation in Pinewood (Pinus Sylvestris L.)”. Journal of Environmental Engineering and Landscape Management, vol. 16, no. 3, Sept. 2008, pp. 121-7, doi:10.3846/1648-6897.2008.16.121-127.