p. 977-984; Submitted by JURANDI DE SOUZA SILVA (jssufba@hotmail.com) on 2012-11-08T18:46:05Z No. of bitstreams: 1 1-s2.0-S1286457904001856-main.pdf: 320965 bytes, checksum: aef854a2cfd36c43568ef089a238616a (MD5); Made available in DSpace on 2012-11-08T18:46:05Z (GMT). No. of bitstreams: 1 1-s2.0-S1286457904001856-main.pdf: 320965 bytes, checksum: aef854a2cfd36c43568ef089a238616a (MD5) Previous issue date: 2004...