Growth and characterization of Hg´I IND.2´, Pb´I IND.2´ and Pb´I IND.2´:Hg´I IND.2´ layered semiconductors - Manoel, E R; Custódio, M C C; Guimarães, Francisco Eduardo Gontijo; Bianchi, R. F.; Hernandes, Antônio Carlos (Materials Research, 1999)