L.D. Abreu
J. Bustoz
J.L. Cardoso
Year of publication: 2003
Volume: 2003
Issue: 67
Pages: 4241-4248
Other: https://www.emis.de/journals/HOA/IJMMS/Volume2003_67/709476.abs.html
DOI: 10.1155/S016117120320613X