1. Radioactivity involved in the production of fertilizers: radioecological impact;Bolivar,1993
2. A generalized transmission method for γ-efficiency determinations in soil samples;Bolivar;Nucl. Geophys.,1994
3. Fluxes and distribution of natural radionuclides in the production and use of fertilizers;Bolivar;Appl. Radiat. Isot.,1995
4. Aplicaciones de las espectrometrías gamma y alfa al estudio del impacto radioactivo producido por industrias no nucleares;Bolivar,1995
5. Spatial distribution of radionuclides in soils around a coal-fired plant;Bunzl;Sci. Tot. Environ.,1984