Chain Code Algorithm in Deriving T–Junction and Region of a Freehand Sketch. Jurnal Teknologi (Sciences & Engineering), [S. l.], v. 40, n. 1, p. 25–36, 2012. DOI: 10.11113/jt.v40.413. Disponível em: https://journals.utm.my/jurnalteknologi/article/view/413.. Acesso em: 5 dec. 2025.