Authors: Kopacz, Z Morgas, W Urbanski, J

Citation: Z. Kopacz et al., The maritime safety system, its main components and elements, J NAVIG, 54(2), 2001, pp. 199-211

Authors: Semenas, L Kreiter, A Urbanski, J

Citation: L. Semenas et al., New cases of human diphyllobothriosis in Patagonia, Argentine, REV SAUDE P, 35(2), 2001, pp. 214-216