Document Type : Original Article
Authors
1 Department of Mathematics and Computer Science, Victoriei 76, 430122 Baia Mare, Romania
2 Departamento de Matematica-ICE, Universidade Federal de Amazonas-UFAM, 69080-900 Manaus
3 "Vasile Alecsandri" National College, str. Vasile Alecsandri nr. 37, Bacau, Romania
Abstract
Keywords
Main Subjects