SUDEV, N.K.; GERMINA, K.A. A study on integer additive set-valuations of signed graphs. Carpathian Mathematical Publications, [S. l.], v. 7, n. 2, p. 236–246, 2015. DOI: 10.15330/cmp.7.2.236-246. Disponível em: https://scijournals.pnu.edu.ua/index.php/cmp/article/view/1403. Acesso em: 9 may. 2024.