Submitted by Guilherme Lemeszenski (guilherme@nead.unesp.br) on 2013-08-22T19:02:21Z No. of bitstreams: 1 S0301-80591998000300010.pdf: 33159 bytes, checksum: a0464dd6924f9daa23cd5041a83d175f (MD5); Made available in DSpace on 2013-08-22T19:02:21Z (GMT). No. of bitstreams: 1 S0301-80591998000300010.pdf: 33159 bytes, checksum: a0464dd6924f9daa23cd5041a83d175f (MD5) Previous issue date: 1998-09-01; Made available ...