Structure refinement of 'Sr IND.0.61''Ba IND.0.39''Nb IND.2''O IND.6' (SBN 61/39) ceramic powder from neutron and X rays data - Guevara, J A; Mascarenhas, Yvonne Primerano; Spinola, D; Garcia, D.; Eiras, J A (Encontro Nacional de Física da Matéria Condensada, 2000)