MARKOVA, Kremena Tsankova; DOVRAMADJIEV, Tihomir Atanassov; JECHEVA, Ginka Velikova. Methodology for creating 3D paper unfolded models with complex geometry using open-source software and resources with free personal and commercial license. ANNUAL JOURNAL OF TECHNICAL UNIVERSITY OF VARNA, BULGARIA, [S. l.], v. 2, n. 1, p. 39–46, 2018. DOI: 10.29114/ajtuv.vol2.iss1.67. Disponível em: https://aj.tu-varna.bg/index.php/ajtuv/article/view/67. Acesso em: 2 oct. 2025.