TI - Cr and Yb markers determination in animal feces by energy dispersive x-ray fluorescence PY - 2007 AU - Almeida, E AU - Gomide, Catarina Abdalla AU - Senicato, L A AU - Nascimento Filho, VirgĂ­lio Franco do T2 - International Nuclear Atlantic Conference - INAC 2007 J2 - International Nuclear Atlantic Conference - INAC 2007 PP - Rio de Janeiro PB - ABEN ER -