BORBA, Paulo. A Refinement Theory for Concurrent Object Oriented Languages. In: BRAZILIAN SYMPOSIUM ON SOFTWARE ENGINEERING (SBES), 10. , 1996, São Carlos/SP. Anais [...]. Porto Alegre: Sociedade Brasileira de Computação, 1996 . p. 39-55. ISSN 2833-0633. DOI: https://doi.org/10.5753/sbes.1996.24436.