RT Journal Article SR Electronic(1) A1 Simőes Filho, I.A.YR 1991 T1 Tempos de Trânsito de Ondas Quase Cisalhantes em Meios Heterogęneos Anisotrópicos: Precisăo do Metodo de Perturbaçăo JF , VO OP SP cp-316-00138 DO https://doi.org/10.3997/2214-4609-pdb.316.138 PB European Association of Geoscientists & Engineers, SN 2214-4609, AB , UL https://www.earthdoc.org/content/papers/10.3997/2214-4609-pdb.316.138