PICHILIANI, Mauro C.; HIRATA, Celso M.. A technical comparison of existing approaches for implementing collaborative requirements in non-collaborative applications. In: BRAZILIAN SYMPOSIUM ON COLLABORATIVE SYSTEMS (SBSC), 4. , 2007, Rio de Janeiro/RJ. Anais [...]. Porto Alegre: Sociedade Brasileira de Computação, 2007 . p. 1855-1868. ISSN 2326-2842.