SCHIEG, Martin. The development of an electronic system for contracts and the execution of building work in Germany. Business: Theory and Practice, [S. l.], v. 7, n. 3, p. 183–191, 2006. DOI: 10.3846/btp.2006.23. Disponível em: https://journals.vilniustech.lt/index.php/BTP/article/view/11620. Acesso em: 10 may. 2025.